3940624 has 10 divisors (see below), whose sum is σ = 7634990. Its totient is φ = 1970304.

The previous prime is 3940609. The next prime is 3940631. The reversal of 3940624 is 4260493.

It can be written as a sum of positive squares in only one way, i.e., 3873024 + 67600 = 1968^2 + 260^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3940592 and 3940601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123129 + ... + 123160.

It is an arithmetic number, because the mean of its divisors is an integer number (763499).

Almost surely, 2^3940624 is an apocalyptic number.

It is an amenable number.

3940624 is a deficient number, since it is larger than the sum of its proper divisors (3694366).

3940624 is a wasteful number, since it uses less digits than its factorization.

3940624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246297 (or 246291 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 3940624 is about 1985.1005012341. The cubic root of 3940624 is about 157.9507403989.

The spelling of 3940624 in words is "three million, nine hundred forty thousand, six hundred twenty-four".