403972689121 has 16 divisors (see below), whose sum is σ = 410121611200. Its totient is φ = 397878257088.

The previous prime is 403972689091. The next prime is 403972689167. The reversal of 403972689121 is 121986279304.

It is a cyclic number.

It is not a de Polignac number, because 403972689121 - 2⁵ = 403972689089 is a prime.

It is a super-2 number, since 2×403972689121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403972689191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14017795 + ... + 14046583.

It is an arithmetic number, because the mean of its divisors is an integer number (25632600700).

Almost surely, 2^403972689121 is an apocalyptic number.

It is an amenable number.

403972689121 is a deficient number, since it is larger than the sum of its proper divisors (6148922079).

403972689121 is a wasteful number, since it uses less digits than its factorization.

403972689121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29728.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 403972689121 in words is "four hundred three billion, nine hundred seventy-two million, six hundred eighty-nine thousand, one hundred twenty-one".