49979591 has 2 divisors, whose sum is σ = 49979592. Its totient is φ = 49979590.

The previous prime is 49979539. The next prime is 49979597. The reversal of 49979591 is 19597994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49979591 - 2¹⁰ = 49978567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49979597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24989795 + 24989796.

It is an arithmetic number, because the mean of its divisors is an integer number (24989796).

Almost surely, 2^49979591 is an apocalyptic number.

49979591 is a deficient number, since it is larger than the sum of its proper divisors (1).

49979591 is an equidigital number, since it uses as much as digits as its factorization.

49979591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 53.

The square root of 49979591 is about 7069.6245303411. The cubic root of 49979591 is about 368.3530181099.

The spelling of 49979591 in words is "forty-nine million, nine hundred seventy-nine thousand, five hundred ninety-one".