49721864 has 32 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 24182016.

The previous prime is 49721851. The next prime is 49721869. The reversal of 49721864 is 46812794.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (49721869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83552 + ... + 84144.

It is an arithmetic number, because the mean of its divisors is an integer number (2993760).

Almost surely, 2^49721864 is an apocalyptic number.

It is an amenable number.

49721864 is a deficient number, since it is larger than the sum of its proper divisors (46078456).

49721864 is a wasteful number, since it uses less digits than its factorization.

49721864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 865 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 49721864 is about 7051.3731995974. The cubic root of 49721864 is about 367.7187714325.

The spelling of 49721864 in words is "forty-nine million, seven hundred twenty-one thousand, eight hundred sixty-four".