79463621 has 2 divisors, whose sum is σ = 79463622. Its totient is φ = 79463620.

The previous prime is 79463603. The next prime is 79463623. The reversal of 79463621 is 12636497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79459396 + 4225 = 8914^2 + 65^2 .

It is an emirp because it is prime and its reverse (12636497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79463621 - 2¹⁰ = 79462597 is a prime.

It is a Sophie Germain prime.

Together with 79463623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79463623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39731810 + 39731811.

It is an arithmetic number, because the mean of its divisors is an integer number (39731811).

Almost surely, 2^79463621 is an apocalyptic number.

It is an amenable number.

79463621 is a deficient number, since it is larger than the sum of its proper divisors (1).

79463621 is an equidigital number, since it uses as much as digits as its factorization.

79463621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 79463621 is about 8914.2369836122. The cubic root of 79463621 is about 429.9217831412.

The spelling of 79463621 in words is "seventy-nine million, four hundred sixty-three thousand, six hundred twenty-one".