395191404 has 18 divisors (see below), whose sum is σ = 998956140. Its totient is φ = 131730456.

The previous prime is 395191387. The next prime is 395191411. The reversal of 395191404 is 404191593.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 10977539 = 395191404 / (3 + 9 + 5 + 1 + 9 + 1 + 4 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5488734 + ... + 5488805.

Almost surely, 2^395191404 is an apocalyptic number.

It is an amenable number.

395191404 is an abundant number, since it is smaller than the sum of its proper divisors (603764736).

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

395191404 is a wasteful number, since it uses less digits than its factorization.

395191404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10977549 (or 10977544 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 395191404 is about 19879.4216213651. The cubic root of 395191404 is about 733.8418857230.

The spelling of 395191404 in words is "three hundred ninety-five million, one hundred ninety-one thousand, four hundred four".