48999979 has 4 divisors (see below), whose sum is σ = 55999984. Its totient is φ = 41999976.

The previous prime is 48999893. The next prime is 48999983. The reversal of 48999979 is 97999984.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 48999979 - 2¹¹ = 48997931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48999979.

It is not an unprimeable number, because it can be changed into a prime (48999989) 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, 3499992 + ... + 3500005.

It is an arithmetic number, because the mean of its divisors is an integer number (13999996).

Almost surely, 2^48999979 is an apocalyptic number.

48999979 is a deficient number, since it is larger than the sum of its proper divisors (7000005).

48999979 is an equidigital number, since it uses as much as digits as its factorization.

48999979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7000004.

The product of its digits is 13226976, while the sum is 64.

The square root of 48999979 is about 6999.9984999998. The cubic root of 48999979 is about 365.9305187265.

It can be divided in two parts, 4899 and 9979, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 48999979 in words is "forty-eight million, nine hundred ninety-nine thousand, nine hundred seventy-nine".