38947898840 has 32 divisors (see below), whose sum is σ = 87918248880. Its totient is φ = 15528408192.

The previous prime is 38947898839. The next prime is 38947898867. The reversal of 38947898840 is 4889874983.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573547 + ... + 1598106.

Almost surely, 2^38947898840 is an apocalyptic number.

It is an amenable number.

38947898840 is an abundant number, since it is smaller than the sum of its proper divisors (48970350040).

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

38947898840 is a wasteful number, since it uses less digits than its factorization.

38947898840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171971 (or 3171967 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 68.

The spelling of 38947898840 in words is "thirty-eight billion, nine hundred forty-seven million, eight hundred ninety-eight thousand, eight hundred forty".