9401617409 has 2 divisors, whose sum is σ = 9401617410. Its totient is φ = 9401617408.

The previous prime is 9401617403. The next prime is 9401617441. The reversal of 9401617409 is 9047161049.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9316110400 + 85507009 = 96520^2 + 9247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9401617409 is a prime.

It is not a weakly prime, because it can be changed into another prime (9401617403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4700808704 + 4700808705.

It is an arithmetic number, because the mean of its divisors is an integer number (4700808705).

Almost surely, 2^9401617409 is an apocalyptic number.

It is an amenable number.

9401617409 is a deficient number, since it is larger than the sum of its proper divisors (1).

9401617409 is an equidigital number, since it uses as much as digits as its factorization.

9401617409 is an evil number, because the sum of its binary digits is even.

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

The square root of 9401617409 is about 96961.9379395853. The cubic root of 9401617409 is about 2110.5753325047.

The spelling of 9401617409 in words is "nine billion, four hundred one million, six hundred seventeen thousand, four hundred nine".