79700549 has 2 divisors, whose sum is σ = 79700550. Its totient is φ = 79700548.

The previous prime is 79700527. The next prime is 79700567. The reversal of 79700549 is 94500797.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71944324 + 7756225 = 8482^2 + 2785^2 .

It is an emirp because it is prime and its reverse (94500797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79700549 - 2⁸ = 79700293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79700749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39850274 + 39850275.

It is an arithmetic number, because the mean of its divisors is an integer number (39850275).

Almost surely, 2^79700549 is an apocalyptic number.

It is an amenable number.

79700549 is a deficient number, since it is larger than the sum of its proper divisors (1).

79700549 is an equidigital number, since it uses as much as digits as its factorization.

79700549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 79700549 is about 8927.5163959525. The cubic root of 79700549 is about 430.3486427903.

The spelling of 79700549 in words is "seventy-nine million, seven hundred thousand, five hundred forty-nine".