3639407 has 2 divisors, whose sum is σ = 3639408. Its totient is φ = 3639406.

The previous prime is 3639403. The next prime is 3639409. The reversal of 3639407 is 7049363.

It is a strong prime.

It is an emirp because it is prime and its reverse (7049363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3639407 - 2² = 3639403 is a prime.

Together with 3639409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3639403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819703 + 1819704.

It is an arithmetic number, because the mean of its divisors is an integer number (1819704).

Almost surely, 2^3639407 is an apocalyptic number.

3639407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3639407 is an equidigital number, since it uses as much as digits as its factorization.

3639407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 3639407 is about 1907.7229882769. The cubic root of 3639407 is about 153.8190797165.

The spelling of 3639407 in words is "three million, six hundred thirty-nine thousand, four hundred seven".