79640411 has 2 divisors, whose sum is σ = 79640412. Its totient is φ = 79640410.

The previous prime is 79640369. The next prime is 79640423. The reversal of 79640411 is 11404697.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79640411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79640471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39820205 + 39820206.

It is an arithmetic number, because the mean of its divisors is an integer number (39820206).

Almost surely, 2^79640411 is an apocalyptic number.

79640411 is a deficient number, since it is larger than the sum of its proper divisors (1).

79640411 is an equidigital number, since it uses as much as digits as its factorization.

79640411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 79640411 is about 8924.1476343682. The cubic root of 79640411 is about 430.2403757873.

The spelling of 79640411 in words is "seventy-nine million, six hundred forty thousand, four hundred eleven".