9940624 has 10 divisors (see below), whose sum is σ = 19259990. Its totient is φ = 4970304.

The previous prime is 9940613. The next prime is 9940643. The reversal of 9940624 is 4260499.

9940624 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., 7118224 + 2822400 = 2668^2 + 1680^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9940624.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310629 + ... + 310660.

It is an arithmetic number, because the mean of its divisors is an integer number (1925999).

Almost surely, 2^9940624 is an apocalyptic number.

It is an amenable number.

9940624 is a deficient number, since it is larger than the sum of its proper divisors (9319366).

9940624 is a wasteful number, since it uses less digits than its factorization.

9940624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621297 (or 621291 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 9940624 is about 3152.8755129247. The cubic root of 9940624 is about 215.0162165522.

The spelling of 9940624 in words is "nine million, nine hundred forty thousand, six hundred twenty-four".