395142906 has 32 divisors (see below), whose sum is σ = 819727488. Its totient is φ = 126878400.

The previous prime is 395142889. The next prime is 395142919. The reversal of 395142906 is 609241593.

It is a super-2 number, since 2×395142906² = 312275832324249672, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13611 + ... + 31233.

It is an arithmetic number, because the mean of its divisors is an integer number (25616484).

Almost surely, 2^395142906 is an apocalyptic number.

395142906 is an abundant number, since it is smaller than the sum of its proper divisors (424584582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

395142906 is a wasteful number, since it uses less digits than its factorization.

395142906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17766.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 395142906 is about 19878.2017798391. The cubic root of 395142906 is about 733.8118654008.

The spelling of 395142906 in words is "three hundred ninety-five million, one hundred forty-two thousand, nine hundred six".