400869872852 has 48 divisors (see below), whose sum is σ = 770537214720. Its totient is φ = 181713792000.

The previous prime is 400869872807. The next prime is 400869872873. The reversal of 400869872852 is 258278968004.

It is a super-2 number, since 2×400869872852² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400869872791 and 400869872800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 689774 + ... + 1130277.

It is an arithmetic number, because the mean of its divisors is an integer number (16052858640).

Almost surely, 2^400869872852 is an apocalyptic number.

It is an amenable number.

400869872852 is a deficient number, since it is larger than the sum of its proper divisors (369667341868).

400869872852 is a wasteful number, since it uses less digits than its factorization.

400869872852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820192 (or 1820190 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 59.

It can be divided in two parts, 400869 and 872852, that added together give a palindrome (1273721).

The spelling of 400869872852 in words is "four hundred billion, eight hundred sixty-nine million, eight hundred seventy-two thousand, eight hundred fifty-two".