790678121 has 2 divisors, whose sum is σ = 790678122. Its totient is φ = 790678120.

The previous prime is 790678051. The next prime is 790678139. The reversal of 790678121 is 121876097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 449906521 + 340771600 = 21211^2 + 18460^2 .

It is a cyclic number.

It is not a de Polignac number, because 790678121 - 2¹⁴ = 790661737 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (790678181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395339060 + 395339061.

It is an arithmetic number, because the mean of its divisors is an integer number (395339061).

Almost surely, 2^790678121 is an apocalyptic number.

It is an amenable number.

790678121 is a deficient number, since it is larger than the sum of its proper divisors (1).

790678121 is an equidigital number, since it uses as much as digits as its factorization.

790678121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 790678121 is about 28118.9992887371. Note that the first 3 decimals coincide. The cubic root of 790678121 is about 924.6979762929.

The spelling of 790678121 in words is "seven hundred ninety million, six hundred seventy-eight thousand, one hundred twenty-one".