79723153 has 2 divisors, whose sum is σ = 79723154. Its totient is φ = 79723152.

The previous prime is 79723151. The next prime is 79723201. The reversal of 79723153 is 35132797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76860289 + 2862864 = 8767^2 + 1692^2 .

It is a cyclic number.

It is not a de Polignac number, because 79723153 - 2¹ = 79723151 is a prime.

It is a super-2 number, since 2×79723153² = 12711562248522818, which contains 22 as substring.

Together with 79723151, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79723151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39861576 + 39861577.

It is an arithmetic number, because the mean of its divisors is an integer number (39861577).

Almost surely, 2^79723153 is an apocalyptic number.

It is an amenable number.

79723153 is a deficient number, since it is larger than the sum of its proper divisors (1).

79723153 is an equidigital number, since it uses as much as digits as its factorization.

79723153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39690, while the sum is 37.

The square root of 79723153 is about 8928.7822797961. The cubic root of 79723153 is about 430.3893229001.

The spelling of 79723153 in words is "seventy-nine million, seven hundred twenty-three thousand, one hundred fifty-three".