400500491902 has 16 divisors (see below), whose sum is σ = 722707655040. Its totient is φ = 162609222168.

The previous prime is 400500491899. The next prime is 400500491969. The reversal of 400500491902 is 209194005004.

It is a congruent number.

It is an unprimeable number.

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, 752820208 + ... + 752820739.

It is an arithmetic number, because the mean of its divisors is an integer number (45169228440).

Almost surely, 2^400500491902 is an apocalyptic number.

400500491902 is a deficient number, since it is larger than the sum of its proper divisors (322207163138).

400500491902 is a wasteful number, since it uses less digits than its factorization.

400500491902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505640975.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 400500491902 its reverse (209194005004), we get a palindrome (609694496906).

The spelling of 400500491902 in words is "four hundred billion, five hundred million, four hundred ninety-one thousand, nine hundred two".