49986721 has 8 divisors (see below), whose sum is σ = 50479200. Its totient is φ = 49496832.

The previous prime is 49986707. The next prime is 49986733. The reversal of 49986721 is 12768994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49986721 - 2¹¹ = 49984673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49986121) 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, 72846 + ... + 73528.

It is an arithmetic number, because the mean of its divisors is an integer number (6309900).

Almost surely, 2^49986721 is an apocalyptic number.

It is an amenable number.

49986721 is a deficient number, since it is larger than the sum of its proper divisors (492479).

49986721 is a wasteful number, since it uses less digits than its factorization.

49986721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its digits is 217728, while the sum is 46.

The square root of 49986721 is about 7070.1287824197. The cubic root of 49986721 is about 368.3705334736.

The spelling of 49986721 in words is "forty-nine million, nine hundred eighty-six thousand, seven hundred twenty-one".