49979757 has 4 divisors (see below), whose sum is σ = 66639680. Its totient is φ = 33319836.

The previous prime is 49979737. The next prime is 49979767. The reversal of 49979757 is 75797994.

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 49979757 - 2⁶ = 49979693 is a prime.

It is a super-2 number, since 2×49979757² = 4995952219558098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49979697 and 49979706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49979737) 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, 8329957 + ... + 8329962.

It is an arithmetic number, because the mean of its divisors is an integer number (16659920).

Almost surely, 2^49979757 is an apocalyptic number.

It is an amenable number.

49979757 is a deficient number, since it is larger than the sum of its proper divisors (16659923).

49979757 is a wasteful number, since it uses less digits than its factorization.

49979757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16659922.

The product of its digits is 5000940, while the sum is 57.

The square root of 49979757 is about 7069.6362707002. The cubic root of 49979757 is about 368.3534259199.

The spelling of 49979757 in words is "forty-nine million, nine hundred seventy-nine thousand, seven hundred fifty-seven".