50644039 has 2 divisors, whose sum is σ = 50644040. Its totient is φ = 50644038.

The previous prime is 50644021. The next prime is 50644073. The reversal of 50644039 is 93044605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50644039 - 2¹¹ = 50641991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50644039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50644079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25322019 + 25322020.

It is an arithmetic number, because the mean of its divisors is an integer number (25322020).

Almost surely, 2^50644039 is an apocalyptic number.

50644039 is a deficient number, since it is larger than the sum of its proper divisors (1).

50644039 is an equidigital number, since it uses as much as digits as its factorization.

50644039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 50644039 is about 7116.4625341528. The cubic root of 50644039 is about 369.9781798673.

The spelling of 50644039 in words is "fifty million, six hundred forty-four thousand, thirty-nine".