404138396 has 12 divisors (see below), whose sum is σ = 708230880. Its totient is φ = 201786720.

The previous prime is 404138393. The next prime is 404138437. The reversal of 404138396 is 693831404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404138393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67385 + ... + 73136.

It is an arithmetic number, because the mean of its divisors is an integer number (59019240).

Almost surely, 2^404138396 is an apocalyptic number.

It is an amenable number.

404138396 is a deficient number, since it is larger than the sum of its proper divisors (304092484).

404138396 is a wasteful number, since it uses less digits than its factorization.

404138396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141244 (or 141242 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 404138396 is about 20103.1936766276. The cubic root of 404138396 is about 739.3385835782.

The spelling of 404138396 in words is "four hundred four million, one hundred thirty-eight thousand, three hundred ninety-six".