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379220749 = 445185199
BaseRepresentation
bin10110100110100…
…111001100001101
3222102120102001221
4112212213030031
51234040030444
6101344003341
712253215565
oct2646471415
9872512057
10379220749
11185073186
12a7000551
136074759b
1438515da5
152345ba84
hex169a730d

379220749 has 4 divisors (see below), whose sum is σ = 379310400. Its totient is φ = 379131100.

The previous prime is 379220747. The next prime is 379220797. The reversal of 379220749 is 947022973.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 379220749 - 21 = 379220747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379220747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38149 + ... + 47050.

It is an arithmetic number, because the mean of its divisors is an integer number (94827600).

Almost surely, 2379220749 is an apocalyptic number.

It is an amenable number.

379220749 is a deficient number, since it is larger than the sum of its proper divisors (89651).

379220749 is an equidigital number, since it uses as much as digits as its factorization.

379220749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89650.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 379220749 is about 19473.5910658512. The cubic root of 379220749 is about 723.8201970248.

The spelling of 379220749 in words is "three hundred seventy-nine million, two hundred twenty thousand, seven hundred forty-nine".

Divisors: 1 4451 85199 379220749