79190873 has 2 divisors, whose sum is σ = 79190874. Its totient is φ = 79190872.

The previous prime is 79190869. The next prime is 79190887. The reversal of 79190873 is 37809197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78092569 + 1098304 = 8837^2 + 1048^2 .

It is a cyclic number.

It is not a de Polignac number, because 79190873 - 2² = 79190869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79190843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39595436 + 39595437.

It is an arithmetic number, because the mean of its divisors is an integer number (39595437).

Almost surely, 2^79190873 is an apocalyptic number.

It is an amenable number.

79190873 is a deficient number, since it is larger than the sum of its proper divisors (1).

79190873 is an equidigital number, since it uses as much as digits as its factorization.

79190873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 79190873 is about 8898.9253845619. The cubic root of 79190873 is about 429.4293367386.

The spelling of 79190873 in words is "seventy-nine million, one hundred ninety thousand, eight hundred seventy-three".