395129157 has 4 divisors (see below), whose sum is σ = 526838880. Its totient is φ = 263419436.

The previous prime is 395129153. The next prime is 395129159. The reversal of 395129157 is 751921593.

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 395129157 - 2² = 395129153 is a prime.

It is a super-2 number, since 2×395129157² = 312254101423061298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395129153) 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, 65854857 + ... + 65854862.

It is an arithmetic number, because the mean of its divisors is an integer number (131709720).

Almost surely, 2^395129157 is an apocalyptic number.

It is an amenable number.

395129157 is a deficient number, since it is larger than the sum of its proper divisors (131709723).

395129157 is a wasteful number, since it uses less digits than its factorization.

395129157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131709722.

The product of its digits is 85050, while the sum is 42.

The square root of 395129157 is about 19877.8559457503. The cubic root of 395129157 is about 733.8033543059.

The spelling of 395129157 in words is "three hundred ninety-five million, one hundred twenty-nine thousand, one hundred fifty-seven".