9699409 has 2 divisors, whose sum is σ = 9699410. Its totient is φ = 9699408.

The previous prime is 9699377. The next prime is 9699433. The reversal of 9699409 is 9049969.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 2650384 = 2655^2 + 1628^2 .

It is an emirp because it is prime and its reverse (9049969) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9699409 - 2⁵ = 9699377 is a prime.

It is not a weakly prime, because it can be changed into another prime (9699449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4849704 + 4849705.

It is an arithmetic number, because the mean of its divisors is an integer number (4849705).

Almost surely, 2^9699409 is an apocalyptic number.

It is an amenable number.

9699409 is a deficient number, since it is larger than the sum of its proper divisors (1).

9699409 is an equidigital number, since it uses as much as digits as its factorization.

9699409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 9699409 is about 3114.3874197023. The cubic root of 9699409 is about 213.2627921612.

The spelling of 9699409 in words is "nine million, six hundred ninety-nine thousand, four hundred nine".