9887431952 has 10 divisors (see below), whose sum is σ = 19156899438. Its totient is φ = 4943715968.

The previous prime is 9887431951. The next prime is 9887431979. The reversal of 9887431952 is 2591347889.

It can be written as a sum of positive squares in only one way, i.e., 8005954576 + 1881477376 = 89476^2 + 43376^2 .

It is a super-2 number, since 2×9887431952² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9887431951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308982233 + ... + 308982264.

Almost surely, 2^9887431952 is an apocalyptic number.

It is an amenable number.

9887431952 is a deficient number, since it is larger than the sum of its proper divisors (9269467486).

9887431952 is a wasteful number, since it uses less digits than its factorization.

9887431952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617964505 (or 617964499 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 56.

The square root of 9887431952 is about 99435.5668360170. The cubic root of 9887431952 is about 2146.3201485778.

The spelling of 9887431952 in words is "nine billion, eight hundred eighty-seven million, four hundred thirty-one thousand, nine hundred fifty-two".