790408561 has 2 divisors, whose sum is σ = 790408562. Its totient is φ = 790408560.

The previous prime is 790408517. The next prime is 790408583. The reversal of 790408561 is 165804097.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 593848161 + 196560400 = 24369^2 + 14020^2 .

It is a cyclic number.

It is not a de Polignac number, because 790408561 - 2⁷ = 790408433 is a prime.

It is a super-3 number, since 3×790408561³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (790408511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395204280 + 395204281.

It is an arithmetic number, because the mean of its divisors is an integer number (395204281).

Almost surely, 2^790408561 is an apocalyptic number.

It is an amenable number.

790408561 is a deficient number, since it is larger than the sum of its proper divisors (1).

790408561 is an equidigital number, since it uses as much as digits as its factorization.

790408561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 790408561 is about 28114.2056796915. The cubic root of 790408561 is about 924.5928808853.

The spelling of 790408561 in words is "seven hundred ninety million, four hundred eight thousand, five hundred sixty-one".