397259129 has 8 divisors (see below), whose sum is σ = 403729920. Its totient is φ = 390812800.

The previous prime is 397259119. The next prime is 397259131. The reversal of 397259129 is 921952793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397259129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (397259119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28169 + ... + 39849.

It is an arithmetic number, because the mean of its divisors is an integer number (50466240).

Almost surely, 2^397259129 is an apocalyptic number.

It is an amenable number.

397259129 is a deficient number, since it is larger than the sum of its proper divisors (6470791).

397259129 is a wasteful number, since it uses less digits than its factorization.

397259129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12231.

The product of its digits is 306180, while the sum is 47.

The square root of 397259129 is about 19931.3604402710. The cubic root of 397259129 is about 735.1195319811.

The spelling of 397259129 in words is "three hundred ninety-seven million, two hundred fifty-nine thousand, one hundred twenty-nine".