79277461 has 2 divisors, whose sum is σ = 79277462. Its totient is φ = 79277460.

The previous prime is 79277459. The next prime is 79277467. The reversal of 79277461 is 16477297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64883025 + 14394436 = 8055^2 + 3794^2 .

It is an emirp because it is prime and its reverse (16477297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79277461 - 2¹ = 79277459 is a prime.

Together with 79277459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79277467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39638730 + 39638731.

It is an arithmetic number, because the mean of its divisors is an integer number (39638731).

Almost surely, 2^79277461 is an apocalyptic number.

It is an amenable number.

79277461 is a deficient number, since it is larger than the sum of its proper divisors (1).

79277461 is an equidigital number, since it uses as much as digits as its factorization.

79277461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 43.

The square root of 79277461 is about 8903.7891372157. The cubic root of 79277461 is about 429.5857936719.

The spelling of 79277461 in words is "seventy-nine million, two hundred seventy-seven thousand, four hundred sixty-one".