3639950 has 24 divisors (see below), whose sum is σ = 6931848. Its totient is φ = 1421280.

The previous prime is 3639941. The next prime is 3639959. The reversal of 3639950 is 599363.

It is an interprime number because it is at equal distance from previous prime (3639941) and next prime (3639959).

It is a self number, because there is not a number n which added to its sum of digits gives 3639950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1304 + ... + 2996.

It is an arithmetic number, because the mean of its divisors is an integer number (288827).

Almost surely, 2^3639950 is an apocalyptic number.

3639950 is a deficient number, since it is larger than the sum of its proper divisors (3291898).

3639950 is a wasteful number, since it uses less digits than its factorization.

3639950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 3639950 is about 1907.8652992284. The cubic root of 3639950 is about 153.8267292783.

The spelling of 3639950 in words is "three million, six hundred thirty-nine thousand, nine hundred fifty".