79046021 has 2 divisors, whose sum is σ = 79046022. Its totient is φ = 79046020.

The previous prime is 79046003. The next prime is 79046027. The reversal of 79046021 is 12064097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41088100 + 37957921 = 6410^2 + 6161^2 .

It is an emirp because it is prime and its reverse (12064097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79046021 - 2¹⁴ = 79029637 is a prime.

It is a Sophie Germain 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 (79046027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39523010 + 39523011.

It is an arithmetic number, because the mean of its divisors is an integer number (39523011).

Almost surely, 2^79046021 is an apocalyptic number.

It is an amenable number.

79046021 is a deficient number, since it is larger than the sum of its proper divisors (1).

79046021 is an equidigital number, since it uses as much as digits as its factorization.

79046021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 79046021 is about 8890.7829239050. The cubic root of 79046021 is about 429.1673466836.

The spelling of 79046021 in words is "seventy-nine million, forty-six thousand, twenty-one".