49539999 has 32 divisors (see below), whose sum is σ = 71976960. Its totient is φ = 30225888.

The previous prime is 49539979. The next prime is 49540009. The reversal of 49539999 is 99993594.

It is not a de Polignac number, because 49539999 - 2⁷ = 49539871 is a prime.

49539999 is a modest number, since divided by 9999 gives 4953 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49539949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174912 + ... + 175194.

It is an arithmetic number, because the mean of its divisors is an integer number (2249280).

Almost surely, 2^49539999 is an apocalyptic number.

49539999 is a deficient number, since it is larger than the sum of its proper divisors (22436961).

49539999 is a wasteful number, since it uses less digits than its factorization.

49539999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411.

The product of its digits is 3542940, while the sum is 57.

The square root of 49539999 is about 7038.4656708689. The cubic root of 49539999 is about 367.2698952889.

The spelling of 49539999 in words is "forty-nine million, five hundred thirty-nine thousand, nine hundred ninety-nine".