3644899 has 2 divisors, whose sum is σ = 3644900. Its totient is φ = 3644898.

The previous prime is 3644873. The next prime is 3644947. The reversal of 3644899 is 9984463.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3644899 is a prime.

3644899 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3644699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822449 + 1822450.

It is an arithmetic number, because the mean of its divisors is an integer number (1822450).

Almost surely, 2^3644899 is an apocalyptic number.

3644899 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644899 is an equidigital number, since it uses as much as digits as its factorization.

3644899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 3644899 is about 1909.1618579890. The cubic root of 3644899 is about 153.8964137263.

The spelling of 3644899 in words is "three million, six hundred forty-four thousand, eight hundred ninety-nine".