79240277 has 2 divisors, whose sum is σ = 79240278. Its totient is φ = 79240276.

The previous prime is 79240243. The next prime is 79240303. The reversal of 79240277 is 77204297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73119601 + 6120676 = 8551^2 + 2474^2 .

It is an emirp because it is prime and its reverse (77204297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79240277 - 2¹² = 79236181 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79240277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79240237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39620138 + 39620139.

It is an arithmetic number, because the mean of its divisors is an integer number (39620139).

Almost surely, 2^79240277 is an apocalyptic number.

It is an amenable number.

79240277 is a deficient number, since it is larger than the sum of its proper divisors (1).

79240277 is an equidigital number, since it uses as much as digits as its factorization.

79240277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 79240277 is about 8901.7007925452. The cubic root of 79240277 is about 429.5186194039.

The spelling of 79240277 in words is "seventy-nine million, two hundred forty thousand, two hundred seventy-seven".