397979529 has 16 divisors (see below), whose sum is σ = 559030080. Its totient is φ = 251147520.

The previous prime is 397979509. The next prime is 397979551. The reversal of 397979529 is 925979793.

It is not a de Polignac number, because 397979529 - 2¹⁶ = 397913993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397979509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96069 + ... + 100125.

It is an arithmetic number, because the mean of its divisors is an integer number (34939380).

Almost surely, 2^397979529 is an apocalyptic number.

It is an amenable number.

397979529 is a deficient number, since it is larger than the sum of its proper divisors (161050551).

397979529 is a wasteful number, since it uses less digits than its factorization.

397979529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5800.

The product of its digits is 9644670, while the sum is 60.

The square root of 397979529 is about 19949.4242774071. The cubic root of 397979529 is about 735.5636252494.

The spelling of 397979529 in words is "three hundred ninety-seven million, nine hundred seventy-nine thousand, five hundred twenty-nine".