49979169 has 6 divisors (see below), whose sum is σ = 72192146. Its totient is φ = 33319440.

The previous prime is 49979141. The next prime is 49979179. The reversal of 49979169 is 96197994.

49979169 is a `hidden beast` number, since 499 + 7 + 91 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 9529569 = 6360^2 + 3087^2 .

It is not a de Polignac number, because 49979169 - 2¹⁵ = 49946401 is a prime.

It is a super-2 number, since 2×49979169² = 4995834667861122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49979129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2776612 + ... + 2776629.

Almost surely, 2^49979169 is an apocalyptic number.

It is an amenable number.

49979169 is a deficient number, since it is larger than the sum of its proper divisors (22212977).

49979169 is a wasteful number, since it uses less digits than its factorization.

49979169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553247 (or 5553244 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 49979169 is about 7069.5946842800. The cubic root of 49979169 is about 368.3519813840.

The spelling of 49979169 in words is "forty-nine million, nine hundred seventy-nine thousand, one hundred sixty-nine".