9939057488 has 10 divisors (see below), whose sum is σ = 19256923914. Its totient is φ = 4969528736.

The previous prime is 9939057481. The next prime is 9939057503. The reversal of 9939057488 is 8847509399.

It can be written as a sum of positive squares in only one way, i.e., 9695947024 + 243110464 = 98468^2 + 15592^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9939057488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9939057481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310595531 + ... + 310595562.

Almost surely, 2^9939057488 is an apocalyptic number.

It is an amenable number.

9939057488 is a deficient number, since it is larger than the sum of its proper divisors (9317866426).

9939057488 is a wasteful number, since it uses less digits than its factorization.

9939057488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621191101 (or 621191095 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 62.

The square root of 9939057488 is about 99694.8217712435. The cubic root of 9939057488 is about 2150.0492138005.

The spelling of 9939057488 in words is "nine billion, nine hundred thirty-nine million, fifty-seven thousand, four hundred eighty-eight".