404289689652 has 72 divisors (see below), whose sum is σ = 1055169140480. Its totient is φ = 130385324160.

The previous prime is 404289689627. The next prime is 404289689689. The reversal of 404289689652 is 256986982404.

404289689652 is a `hidden beast` number, since 40 + 428 + 96 + 89 + 6 + 5 + 2 = 666.

It is a super-2 number, since 2×404289689652² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404289689652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4962624 + ... + 5043432.

Almost surely, 2^404289689652 is an apocalyptic number.

It is an amenable number.

404289689652 is an abundant number, since it is smaller than the sum of its proper divisors (650879450828).

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

404289689652 is a wasteful number, since it uses less digits than its factorization.

404289689652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85333 (or 85328 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 404289689652 in words is "four hundred four billion, two hundred eighty-nine million, six hundred eighty-nine thousand, six hundred fifty-two".