79662049 has 2 divisors, whose sum is σ = 79662050. Its totient is φ = 79662048.

The previous prime is 79662047. The next prime is 79662091. The reversal of 79662049 is 94026697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75690000 + 3972049 = 8700^2 + 1993^2 .

It is an emirp because it is prime and its reverse (94026697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79662049 - 2¹ = 79662047 is a prime.

Together with 79662047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 79661996 and 79662014.

It is not a weakly prime, because it can be changed into another prime (79662047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39831024 + 39831025.

It is an arithmetic number, because the mean of its divisors is an integer number (39831025).

Almost surely, 2^79662049 is an apocalyptic number.

It is an amenable number.

79662049 is a deficient number, since it is larger than the sum of its proper divisors (1).

79662049 is an equidigital number, since it uses as much as digits as its factorization.

79662049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 79662049 is about 8925.3598806995. The cubic root of 79662049 is about 430.2793371561.

The spelling of 79662049 in words is "seventy-nine million, six hundred sixty-two thousand, forty-nine".