402289645804 has 24 divisors (see below), whose sum is σ = 746149265568. Its totient is φ = 189127322880.

The previous prime is 402289645783. The next prime is 402289645811. The reversal of 402289645804 is 408546982204.

It is a happy number.

It is a super-2 number, since 2×402289645804² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2827744 + ... + 2966599.

It is an arithmetic number, because the mean of its divisors is an integer number (31089552732).

Almost surely, 2^402289645804 is an apocalyptic number.

It is an amenable number.

402289645804 is a deficient number, since it is larger than the sum of its proper divisors (343859619764).

402289645804 is a wasteful number, since it uses less digits than its factorization.

402289645804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5795385 (or 5795383 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 402289645804 in words is "four hundred two billion, two hundred eighty-nine million, six hundred forty-five thousand, eight hundred four".