79955497 has 2 divisors, whose sum is σ = 79955498. Its totient is φ = 79955496.

The previous prime is 79955489. The next prime is 79955543. The reversal of 79955497 is 79455997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70829056 + 9126441 = 8416^2 + 3021^2 .

It is a cyclic number.

It is not a de Polignac number, because 79955497 - 2³ = 79955489 is a prime.

It is not a weakly prime, because it can be changed into another prime (79955597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39977748 + 39977749.

It is an arithmetic number, because the mean of its divisors is an integer number (39977749).

Almost surely, 2^79955497 is an apocalyptic number.

It is an amenable number.

79955497 is a deficient number, since it is larger than the sum of its proper divisors (1).

79955497 is an equidigital number, since it uses as much as digits as its factorization.

79955497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3572100, while the sum is 55.

The square root of 79955497 is about 8941.7837705907. The cubic root of 79955497 is about 430.8070241803.

Subtracting from 79955497 its reverse (79455997), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 79955497 in words is "seventy-nine million, nine hundred fifty-five thousand, four hundred ninety-seven".