79623619 has 2 divisors, whose sum is σ = 79623620. Its totient is φ = 79623618.

The previous prime is 79623613. The next prime is 79623637. The reversal of 79623619 is 91632697.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79623619 - 2⁵ = 79623587 is a prime.

It is a super-2 number, since 2×79623619² = 12679841405314322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79623613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39811809 + 39811810.

It is an arithmetic number, because the mean of its divisors is an integer number (39811810).

Almost surely, 2^79623619 is an apocalyptic number.

79623619 is a deficient number, since it is larger than the sum of its proper divisors (1).

79623619 is an equidigital number, since it uses as much as digits as its factorization.

79623619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 43.

The square root of 79623619 is about 8923.2067666282. The cubic root of 79623619 is about 430.2101352594.

The spelling of 79623619 in words is "seventy-nine million, six hundred twenty-three thousand, six hundred nineteen".