913870409 has 2 divisors, whose sum is σ = 913870410. Its totient is φ = 913870408.

The previous prime is 913870403. The next prime is 913870427. The reversal of 913870409 is 904078319.

It is a happy number.

913870409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582739600 + 331130809 = 24140^2 + 18197^2 .

It is a cyclic number.

It is not a de Polignac number, because 913870409 - 2⁴ = 913870393 is a prime.

It is not a weakly prime, because it can be changed into another prime (913870403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456935204 + 456935205.

It is an arithmetic number, because the mean of its divisors is an integer number (456935205).

Almost surely, 2^913870409 is an apocalyptic number.

It is an amenable number.

913870409 is a deficient number, since it is larger than the sum of its proper divisors (1).

913870409 is an equidigital number, since it uses as much as digits as its factorization.

913870409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 913870409 is about 30230.2895950403. The cubic root of 913870409 is about 970.4240215830.

The spelling of 913870409 in words is "nine hundred thirteen million, eight hundred seventy thousand, four hundred nine".