3639942 has 12 divisors (see below), whose sum is σ = 7886580. Its totient is φ = 1213308.

The previous prime is 3639941. The next prime is 3639959. The reversal of 3639942 is 2499363.

It is a happy number.

3639942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3639897 and 3639906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101092 + ... + 101127.

It is an arithmetic number, because the mean of its divisors is an integer number (657215).

Almost surely, 2^3639942 is an apocalyptic number.

3639942 is an abundant number, since it is smaller than the sum of its proper divisors (4246638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3639942 is a wasteful number, since it uses less digits than its factorization.

3639942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202227 (or 202224 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 3639942 is about 1907.8632026432. The cubic root of 3639942 is about 153.8266165831.

The spelling of 3639942 in words is "three million, six hundred thirty-nine thousand, nine hundred forty-two".