79900943 has 2 divisors, whose sum is σ = 79900944. Its totient is φ = 79900942.

The previous prime is 79900879. The next prime is 79900949. The reversal of 79900943 is 34900997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79900943 - 2⁶ = 79900879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79900943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79900949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39950471 + 39950472.

It is an arithmetic number, because the mean of its divisors is an integer number (39950472).

Almost surely, 2^79900943 is an apocalyptic number.

79900943 is a deficient number, since it is larger than the sum of its proper divisors (1).

79900943 is an equidigital number, since it uses as much as digits as its factorization.

79900943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 79900943 is about 8938.7327401595. The cubic root of 79900943 is about 430.7090213557.

The spelling of 79900943 in words is "seventy-nine million, nine hundred thousand, nine hundred forty-three".