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379207889 = 4499192
BaseRepresentation
bin10110100110100…
…100000011010001
3222102112202102122
4112212210003101
51234034123024
6101343424025
712253133234
oct2646440321
9872482378
10379207889
11185064555
12a6bb5015
1360741788
143851141b
1523457d5e
hex169a40d1

379207889 has 6 divisors (see below), whose sum is σ = 380466450. Its totient is φ = 377951616.

The previous prime is 379207883. The next prime is 379207901. The reversal of 379207889 is 988702973.

It can be written as a sum of positive squares in only one way, i.e., 337824400 + 41383489 = 18380^2 + 6433^2 .

It is not a de Polignac number, because 379207889 - 216 = 379142353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 379207889.

It is not an unprimeable number, because it can be changed into a prime (379207883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 412172 + ... + 413090.

It is an arithmetic number, because the mean of its divisors is an integer number (63411075).

Almost surely, 2379207889 is an apocalyptic number.

It is an amenable number.

379207889 is a deficient number, since it is larger than the sum of its proper divisors (1258561).

379207889 is an frugal number, since it uses more digits than its factorization.

With its successor (379207890) it forms an eRAP, since the sums of their prime factors are consecutive (2287 and 2288).

379207889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 379207889 is about 19473.2608722833. The cubic root of 379207889 is about 723.8120149541.

The spelling of 379207889 in words is "three hundred seventy-nine million, two hundred seven thousand, eight hundred eighty-nine".

Divisors: 1 449 919 412631 844561 379207889