49806979 has 4 divisors (see below), whose sum is σ = 49827960. Its totient is φ = 49786000.

The previous prime is 49806971. The next prime is 49807003. The reversal of 49806979 is 97960894.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97960894 = 2 ⋅48980447.

It is a cyclic number.

It is not a de Polignac number, because 49806979 - 2³ = 49806971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49806971) 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, 6397 + ... + 11854.

It is an arithmetic number, because the mean of its divisors is an integer number (12456990).

Almost surely, 2^49806979 is an apocalyptic number.

49806979 is a deficient number, since it is larger than the sum of its proper divisors (20981).

49806979 is a wasteful number, since it uses less digits than its factorization.

49806979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20980.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 49806979 is about 7057.4059682011. The cubic root of 49806979 is about 367.9284748948.

The spelling of 49806979 in words is "forty-nine million, eight hundred six thousand, nine hundred seventy-nine".