394908899 has 16 divisors (see below), whose sum is σ = 502834176. Its totient is φ = 301171200.

The previous prime is 394908893. The next prime is 394908953. The reversal of 394908899 is 998809493.

It is a de Polignac number, because none of the positive numbers 2^k-394908899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394908893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50942 + ... + 58179.

It is an arithmetic number, because the mean of its divisors is an integer number (31427136).

Almost surely, 2^394908899 is an apocalyptic number.

394908899 is a deficient number, since it is larger than the sum of its proper divisors (107925277).

394908899 is a wasteful number, since it uses less digits than its factorization.

394908899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109186.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The square root of 394908899 is about 19872.3148878031. The cubic root of 394908899 is about 733.6669802473. Note that the first 3 decimals are identical.

The spelling of 394908899 in words is "three hundred ninety-four million, nine hundred eight thousand, eight hundred ninety-nine".