50001979 has 2 divisors, whose sum is σ = 50001980. Its totient is φ = 50001978.

The previous prime is 50001943. The next prime is 50002009. The reversal of 50001979 is 97910005.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50001979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50001979.

It is not a weakly prime, because it can be changed into another prime (50001929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25000989 + 25000990.

It is an arithmetic number, because the mean of its divisors is an integer number (25000990).

Almost surely, 2^50001979 is an apocalyptic number.

50001979 is a deficient number, since it is larger than the sum of its proper divisors (1).

50001979 is an equidigital number, since it uses as much as digits as its factorization.

50001979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 50001979 is about 7071.2077469128. The cubic root of 50001979 is about 368.4080102655.

The spelling of 50001979 in words is "fifty million, one thousand, nine hundred seventy-nine".