44621939 has 2 divisors, whose sum is σ = 44621940. Its totient is φ = 44621938.

The previous prime is 44621897. The next prime is 44621947. The reversal of 44621939 is 93912644.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44621939 is a prime.

It is a super-2 number, since 2×44621939² = 3982234880239442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44621999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22310969 + 22310970.

It is an arithmetic number, because the mean of its divisors is an integer number (22310970).

Almost surely, 2^44621939 is an apocalyptic number.

44621939 is a deficient number, since it is larger than the sum of its proper divisors (1).

44621939 is an equidigital number, since it uses as much as digits as its factorization.

44621939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 44621939 is about 6679.9654939229. The cubic root of 44621939 is about 354.6904370073.

The spelling of 44621939 in words is "forty-four million, six hundred twenty-one thousand, nine hundred thirty-nine".