49979217 has 4 divisors (see below), whose sum is σ = 66638960. Its totient is φ = 33319476.

The previous prime is 49979183. The next prime is 49979227. The reversal of 49979217 is 71297994.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 49979217 - 2⁷ = 49979089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49979227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8329867 + ... + 8329872.

It is an arithmetic number, because the mean of its divisors is an integer number (16659740).

Almost surely, 2^49979217 is an apocalyptic number.

It is an amenable number.

49979217 is a deficient number, since it is larger than the sum of its proper divisors (16659743).

49979217 is a wasteful number, since it uses less digits than its factorization.

49979217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16659742.

The product of its digits is 285768, while the sum is 48.

The square root of 49979217 is about 7069.5980790990. The cubic root of 49979217 is about 368.3520993057.

The spelling of 49979217 in words is "forty-nine million, nine hundred seventy-nine thousand, two hundred seventeen".