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387297379 = 755328197
BaseRepresentation
bin10111000101011…
…011000001100011
3222222202202010101
4113011123001203
51243122004004
6102233043231
712411654610
oct2705330143
9888682111
10387297379
1118968a287
12a9856517
1362314861
1439619507
1524004ba4
hex1715b063

387297379 has 4 divisors (see below), whose sum is σ = 442625584. Its totient is φ = 331969176.

The previous prime is 387297373. The next prime is 387297397. The reversal of 387297379 is 973792783.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 387297379 - 23 = 387297371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387297371) 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, 27664092 + ... + 27664105.

It is an arithmetic number, because the mean of its divisors is an integer number (110656396).

Almost surely, 2387297379 is an apocalyptic number.

387297379 is a deficient number, since it is larger than the sum of its proper divisors (55328205).

387297379 is an equidigital number, since it uses as much as digits as its factorization.

387297379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55328204.

The product of its digits is 4000752, while the sum is 55.

The square root of 387297379 is about 19679.8724335296. The cubic root of 387297379 is about 728.9227740913.

The spelling of 387297379 in words is "three hundred eighty-seven million, two hundred ninety-seven thousand, three hundred seventy-nine".

Divisors: 1 7 55328197 387297379