79840801 has 2 divisors, whose sum is σ = 79840802. Its totient is φ = 79840800.

The previous prime is 79840781. The next prime is 79840807. The reversal of 79840801 is 10804897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64786401 + 15054400 = 8049^2 + 3880^2 .

It is a cyclic number.

It is not a de Polignac number, because 79840801 - 2⁵ = 79840769 is a prime.

It is not a weakly prime, because it can be changed into another prime (79840807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39920400 + 39920401.

It is an arithmetic number, because the mean of its divisors is an integer number (39920401).

Almost surely, 2^79840801 is an apocalyptic number.

It is an amenable number.

79840801 is a deficient number, since it is larger than the sum of its proper divisors (1).

79840801 is an equidigital number, since it uses as much as digits as its factorization.

79840801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 79840801 is about 8935.3679834688. The cubic root of 79840801 is about 430.6009283303.

The spelling of 79840801 in words is "seventy-nine million, eight hundred forty thousand, eight hundred one".