79415641 has 2 divisors, whose sum is σ = 79415642. Its totient is φ = 79415640.

The previous prime is 79415639. The next prime is 79415657. The reversal of 79415641 is 14651497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73462041 + 5953600 = 8571^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 79415641 - 2¹ = 79415639 is a prime.

Together with 79415639, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79415641.

It is not a weakly prime, because it can be changed into another prime (79418641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39707820 + 39707821.

It is an arithmetic number, because the mean of its divisors is an integer number (39707821).

Almost surely, 2^79415641 is an apocalyptic number.

It is an amenable number.

79415641 is a deficient number, since it is larger than the sum of its proper divisors (1).

79415641 is an equidigital number, since it uses as much as digits as its factorization.

79415641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 79415641 is about 8911.5453766448. The cubic root of 79415641 is about 429.8352370381.

The spelling of 79415641 in words is "seventy-nine million, four hundred fifteen thousand, six hundred forty-one".