79913153 has 2 divisors, whose sum is σ = 79913154. Its totient is φ = 79913152.

The previous prime is 79913137. The next prime is 79913177. The reversal of 79913153 is 35131997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72471169 + 7441984 = 8513^2 + 2728^2 .

It is an emirp because it is prime and its reverse (35131997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79913153 - 2⁴ = 79913137 is a prime.

It is a super-2 number, since 2×79913153² = 12772224044802818, which contains 22 as substring.

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 (79913123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39956576 + 39956577.

It is an arithmetic number, because the mean of its divisors is an integer number (39956577).

Almost surely, 2^79913153 is an apocalyptic number.

It is an amenable number.

79913153 is a deficient number, since it is larger than the sum of its proper divisors (1).

79913153 is an equidigital number, since it uses as much as digits as its factorization.

79913153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 38.

The square root of 79913153 is about 8939.4156967891. The cubic root of 79913153 is about 430.7309597255.

The spelling of 79913153 in words is "seventy-nine million, nine hundred thirteen thousand, one hundred fifty-three".