3642939 has 12 divisors (see below), whose sum is σ = 5337072. Its totient is φ = 2394000.

The previous prime is 3642931. The next prime is 3642941. The reversal of 3642939 is 9392463.

It is a happy number.

3642939 is a `hidden beast` number, since 3 + 642 + 9 + 3 + 9 = 666.

It is not a de Polignac number, because 3642939 - 2³ = 3642931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3642931) 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, 2212 + ... + 3489.

It is an arithmetic number, because the mean of its divisors is an integer number (444756).

Almost surely, 2^3642939 is an apocalyptic number.

3642939 is a deficient number, since it is larger than the sum of its proper divisors (1694133).

3642939 is a wasteful number, since it uses less digits than its factorization.

3642939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778 (or 5775 counting only the distinct ones).

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

The square root of 3642939 is about 1908.6484747066. The cubic root of 3642939 is about 153.8688234735.

The spelling of 3642939 in words is "three million, six hundred forty-two thousand, nine hundred thirty-nine".