39898879824 has 40 divisors (see below), whose sum is σ = 103084607520. Its totient is φ = 13298013568.

The previous prime is 39898879807. The next prime is 39898879837. The reversal of 39898879824 is 42897889893.

It is a super-2 number, since 2×39898879824² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388954 + ... + 480710.

It is an arithmetic number, because the mean of its divisors is an integer number (2577115188).

Almost surely, 2^39898879824 is an apocalyptic number.

It is an amenable number.

39898879824 is an abundant number, since it is smaller than the sum of its proper divisors (63185727696).

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

39898879824 is a wasteful number, since it uses less digits than its factorization.

39898879824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100827 (or 100821 counting only the distinct ones).

The product of its digits is 501645312, while the sum is 75.

The spelling of 39898879824 in words is "thirty-nine billion, eight hundred ninety-eight million, eight hundred seventy-nine thousand, eight hundred twenty-four".