404395092 has 60 divisors (see below), whose sum is σ = 1059071860. Its totient is φ = 134555904.

The previous prime is 404395081. The next prime is 404395129. The reversal of 404395092 is 290593404.

It can be written as a sum of positive squares in 2 ways, for example, as 216266436 + 188128656 = 14706^2 + 13716^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 326298 + ... + 327534.

Almost surely, 2^404395092 is an apocalyptic number.

It is an amenable number.

404395092 is an abundant number, since it is smaller than the sum of its proper divisors (654676768).

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

404395092 is a wasteful number, since it uses less digits than its factorization.

404395092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262 (or 2251 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 404395092 is about 20109.5771213619. The cubic root of 404395092 is about 739.4950853205.

The spelling of 404395092 in words is "four hundred four million, three hundred ninety-five thousand, ninety-two".