40008920892 has 48 divisors (see below), whose sum is σ = 95528401920. Its totient is φ = 13026818752.

The previous prime is 40008920849. The next prime is 40008920909. The reversal of 40008920892 is 29802980004.

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, 217393 + ... + 356759.

It is an arithmetic number, because the mean of its divisors is an integer number (1990175040).

Almost surely, 2^40008920892 is an apocalyptic number.

It is an amenable number.

40008920892 is an abundant number, since it is smaller than the sum of its proper divisors (55519481028).

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

40008920892 is a wasteful number, since it uses less digits than its factorization.

40008920892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139930 (or 139928 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 40008920892 in words is "forty billion, eight million, nine hundred twenty thousand, eight hundred ninety-two".