5644939 has 2 divisors, whose sum is σ = 5644940. Its totient is φ = 5644938.

The previous prime is 5644931. The next prime is 5644963. The reversal of 5644939 is 9394465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5644939 - 2³ = 5644931 is a prime.

It is not a weakly prime, because it can be changed into another prime (5644931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822469 + 2822470.

It is an arithmetic number, because the mean of its divisors is an integer number (2822470).

Almost surely, 2^5644939 is an apocalyptic number.

5644939 is a deficient number, since it is larger than the sum of its proper divisors (1).

5644939 is an equidigital number, since it uses as much as digits as its factorization.

5644939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 5644939 is about 2375.9080369408. The cubic root of 5644939 is about 178.0545534088.

The spelling of 5644939 in words is "five million, six hundred forty-four thousand, nine hundred thirty-nine".