431400989928 has 32 divisors (see below), whose sum is σ = 1078610211360. Its totient is φ = 143785965120.

The previous prime is 431400989927. The next prime is 431400989933. The reversal of 431400989928 is 829989004134.

It is a super-3 number, since 3×431400989928³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (431400989927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651163 + ... + 1134378.

It is an arithmetic number, because the mean of its divisors is an integer number (33706569105).

Almost surely, 2^431400989928 is an apocalyptic number.

It is an amenable number.

431400989928 is an abundant number, since it is smaller than the sum of its proper divisors (647209221432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431400989928 is a wasteful number, since it uses less digits than its factorization.

431400989928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795617 (or 1795613 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 57.

The spelling of 431400989928 in words is "four hundred thirty-one billion, four hundred million, nine hundred eighty-nine thousand, nine hundred twenty-eight".