404136839432 has 8 divisors (see below), whose sum is σ = 757756573950. Its totient is φ = 202068419712.

The previous prime is 404136839423. The next prime is 404136839461. The reversal of 404136839432 is 234938631404.

It can be written as a sum of positive squares in only one way, i.e., 232812040036 + 171324799396 = 482506^2 + 413914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25258552457 + ... + 25258552472.

Almost surely, 2^404136839432 is an apocalyptic number.

It is an amenable number.

404136839432 is a deficient number, since it is larger than the sum of its proper divisors (353619734518).

404136839432 is a wasteful number, since it uses less digits than its factorization.

404136839432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50517104935 (or 50517104931 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 47.

The spelling of 404136839432 in words is "four hundred four billion, one hundred thirty-six million, eight hundred thirty-nine thousand, four hundred thirty-two".