49999491 has 16 divisors (see below), whose sum is σ = 75331200. Its totient is φ = 32766984.

The previous prime is 49999489. The next prime is 49999529. The reversal of 49999491 is 19499994.

It is not a de Polignac number, because 49999491 - 2¹ = 49999489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49999441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14101 + ... + 17286.

It is an arithmetic number, because the mean of its divisors is an integer number (4708200).

Almost surely, 2^49999491 is an apocalyptic number.

49999491 is a deficient number, since it is larger than the sum of its proper divisors (25331709).

49999491 is a wasteful number, since it uses less digits than its factorization.

49999491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31455 (or 31449 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 49999491 is about 7071.0318200387. The cubic root of 49999491 is about 368.4018997451.

It can be divided in two parts, 499994 and 91, that multiplied together give a palindrome (45499454).

The spelling of 49999491 in words is "forty-nine million, nine hundred ninety-nine thousand, four hundred ninety-one".