79294991 has 2 divisors, whose sum is σ = 79294992. Its totient is φ = 79294990.

The previous prime is 79294981. The next prime is 79295003. The reversal of 79294991 is 19949297.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79294991 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79294921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39647495 + 39647496.

It is an arithmetic number, because the mean of its divisors is an integer number (39647496).

Almost surely, 2^79294991 is an apocalyptic number.

79294991 is a deficient number, since it is larger than the sum of its proper divisors (1).

79294991 is an equidigital number, since it uses as much as digits as its factorization.

79294991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 50.

The square root of 79294991 is about 8904.7734951542. The cubic root of 79294991 is about 429.6174549783.

The spelling of 79294991 in words is "seventy-nine million, two hundred ninety-four thousand, nine hundred ninety-one".