79214621 has 2 divisors, whose sum is σ = 79214622. Its totient is φ = 79214620.

The previous prime is 79214593. The next prime is 79214623. The reversal of 79214621 is 12641297.

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., 72914521 + 6300100 = 8539^2 + 2510^2 .

It is an emirp because it is prime and its reverse (12641297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79214621 - 2¹⁸ = 78952477 is a prime.

Together with 79214623, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_4626275 and since 79214621 and 4626275 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79214623) 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, 39607310 + 39607311.

It is an arithmetic number, because the mean of its divisors is an integer number (39607311).

Almost surely, 2^79214621 is an apocalyptic number.

It is an amenable number.

79214621 is a deficient number, since it is larger than the sum of its proper divisors (1).

79214621 is an equidigital number, since it uses as much as digits as its factorization.

79214621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 79214621 is about 8900.2596029554. The cubic root of 79214621 is about 429.4722586405.

The spelling of 79214621 in words is "seventy-nine million, two hundred fourteen thousand, six hundred twenty-one".