3638959 has 2 divisors, whose sum is σ = 3638960. Its totient is φ = 3638958.

The previous prime is 3638953. The next prime is 3638993. The reversal of 3638959 is 9598363.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3638959 - 2³ = 3638951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3638951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819479 + 1819480.

It is an arithmetic number, because the mean of its divisors is an integer number (1819480).

Almost surely, 2^3638959 is an apocalyptic number.

3638959 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638959 is an equidigital number, since it uses as much as digits as its factorization.

3638959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 3638959 is about 1907.6055671967. The cubic root of 3638959 is about 153.8127679029.

The spelling of 3638959 in words is "three million, six hundred thirty-eight thousand, nine hundred fifty-nine".