404664426437 has 8 divisors (see below), whose sum is σ = 405540176472. Its totient is φ = 403789580800.

The previous prime is 404664426407. The next prime is 404664426443. The reversal of 404664426437 is 734624466404.

It can be written as a sum of positive squares in 4 ways, for example, as 151749981601 + 252914444836 = 389551^2 + 502906^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404664426437 - 2¹⁸ = 404664164293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404664426407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673613 + ... + 1123869.

It is an arithmetic number, because the mean of its divisors is an integer number (50692522059).

Almost surely, 2^404664426437 is an apocalyptic number.

It is an amenable number.

404664426437 is a deficient number, since it is larger than the sum of its proper divisors (875750035).

404664426437 is a wasteful number, since it uses less digits than its factorization.

404664426437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452199.

The product of its (nonzero) digits is 9289728, while the sum is 50.

The spelling of 404664426437 in words is "four hundred four billion, six hundred sixty-four million, four hundred twenty-six thousand, four hundred thirty-seven".