49969591 has 4 divisors (see below), whose sum is σ = 57108112. Its totient is φ = 42831072.

The previous prime is 49969589. The next prime is 49969597. The reversal of 49969591 is 19596994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49969591 - 2¹ = 49969589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49969597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3569250 + ... + 3569263.

It is an arithmetic number, because the mean of its divisors is an integer number (14277028).

Almost surely, 2^49969591 is an apocalyptic number.

49969591 is a deficient number, since it is larger than the sum of its proper divisors (7138521).

49969591 is an equidigital number, since it uses as much as digits as its factorization.

49969591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7138520.

The product of its digits is 787320, while the sum is 52.

The square root of 49969591 is about 7068.9172438217. The cubic root of 49969591 is about 368.3284495757.

The spelling of 49969591 in words is "forty-nine million, nine hundred sixty-nine thousand, five hundred ninety-one".