49539897 has 32 divisors (see below), whose sum is σ = 84288000. Its totient is φ = 28440720.

The previous prime is 49539883. The next prime is 49539923. The reversal of 49539897 is 79893594.

It is not a de Polignac number, because 49539897 - 2⁸ = 49539641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49539697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1254 + ... + 10032.

It is an arithmetic number, because the mean of its divisors is an integer number (2634000).

Almost surely, 2^49539897 is an apocalyptic number.

It is an amenable number.

49539897 is a deficient number, since it is larger than the sum of its proper divisors (34748103).

49539897 is a wasteful number, since it uses less digits than its factorization.

49539897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8818 (or 8812 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 49539897 is about 7038.4584249678. The cubic root of 49539897 is about 367.2696432262.

The spelling of 49539897 in words is "forty-nine million, five hundred thirty-nine thousand, eight hundred ninety-seven".