7890413 has 2 divisors, whose sum is σ = 7890414. Its totient is φ = 7890412.

The previous prime is 7890391. The next prime is 7890427. The reversal of 7890413 is 3140987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5822569 + 2067844 = 2413^2 + 1438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7890413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7890413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7890013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3945206 + 3945207.

It is an arithmetic number, because the mean of its divisors is an integer number (3945207).

Almost surely, 2^7890413 is an apocalyptic number.

It is an amenable number.

7890413 is a deficient number, since it is larger than the sum of its proper divisors (1).

7890413 is an equidigital number, since it uses as much as digits as its factorization.

7890413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 7890413 is about 2808.9878960223. The cubic root of 7890413 is about 199.0825730739.

The spelling of 7890413 in words is "seven million, eight hundred ninety thousand, four hundred thirteen".