400829173028 has 24 divisors (see below), whose sum is σ = 707030018688. Its totient is φ = 198825602976.

The previous prime is 400829172977. The next prime is 400829173049. The reversal of 400829173028 is 820371928004.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 400829173028.

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, 305126 + ... + 945917.

It is an arithmetic number, because the mean of its divisors is an integer number (29459584112).

Almost surely, 2^400829173028 is an apocalyptic number.

It is an amenable number.

400829173028 is a deficient number, since it is larger than the sum of its proper divisors (306200845660).

400829173028 is a wasteful number, since it uses less digits than its factorization.

400829173028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251683 (or 1251681 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 400829173028 in words is "four hundred billion, eight hundred twenty-nine million, one hundred seventy-three thousand, twenty-eight".