79033621 has 2 divisors, whose sum is σ = 79033622. Its totient is φ = 79033620.

The previous prime is 79033607. The next prime is 79033631. The reversal of 79033621 is 12633097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79032100 + 1521 = 8890^2 + 39^2 .

It is an emirp because it is prime and its reverse (12633097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79033621 - 2⁹ = 79033109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79033631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39516810 + 39516811.

It is an arithmetic number, because the mean of its divisors is an integer number (39516811).

Almost surely, 2^79033621 is an apocalyptic number.

It is an amenable number.

79033621 is a deficient number, since it is larger than the sum of its proper divisors (1).

79033621 is an equidigital number, since it uses as much as digits as its factorization.

79033621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 79033621 is about 8890.0855451452. The cubic root of 79033621 is about 429.1449042578.

The spelling of 79033621 in words is "seventy-nine million, thirty-three thousand, six hundred twenty-one".