9937864 has 8 divisors (see below), whose sum is σ = 18633510. Its totient is φ = 4968928.

The previous prime is 9937849. The next prime is 9937891. The reversal of 9937864 is 4687399.

9937864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8749764 + 1188100 = 2958^2 + 1090^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×9937864² = 197522281764992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621109 + ... + 621124.

Almost surely, 2^9937864 is an apocalyptic number.

It is an amenable number.

9937864 is a deficient number, since it is larger than the sum of its proper divisors (8695646).

9937864 is a wasteful number, since it uses less digits than its factorization.

9937864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242239 (or 1242235 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 9937864 is about 3152.4377868564. The cubic root of 9937864 is about 214.9963150621.

It can be divided in two parts, 9937 and 864, that added together give a palindrome (10801).

The spelling of 9937864 in words is "nine million, nine hundred thirty-seven thousand, eight hundred sixty-four".