49986729 has 12 divisors (see below), whose sum is σ = 77757316. Its totient is φ = 30760992.

The previous prime is 49986707. The next prime is 49986733. The reversal of 49986729 is 92768994.

49986729 is a `hidden beast` number, since 499 + 86 + 72 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22581504 + 27405225 = 4752^2 + 5235^2 .

It is not a de Polignac number, because 49986729 - 2²³ = 41598121 is a prime.

It is a super-2 number, since 2×49986729² = 4997346152238882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49986029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213502 + ... + 213735.

Almost surely, 2^49986729 is an apocalyptic number.

It is an amenable number.

49986729 is a deficient number, since it is larger than the sum of its proper divisors (27770587).

49986729 is a wasteful number, since it uses less digits than its factorization.

49986729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427256 (or 427253 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 49986729 is about 7070.1293481803. The cubic root of 49986729 is about 368.3705531252.

The spelling of 49986729 in words is "forty-nine million, nine hundred eighty-six thousand, seven hundred twenty-nine".