116692409 has 4 divisors (see below), whose sum is σ = 121766016. Its totient is φ = 111618804.

The previous prime is 116692397. The next prime is 116692423. The reversal of 116692409 is 904296611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 904296611 = 2311 ⋅391301.

It is a cyclic number.

It is not a de Polignac number, because 116692409 - 2⁴ = 116692393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (116692489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2536769 + ... + 2536814.

It is an arithmetic number, because the mean of its divisors is an integer number (30441504).

Almost surely, 2^116692409 is an apocalyptic number.

It is an amenable number.

116692409 is a deficient number, since it is larger than the sum of its proper divisors (5073607).

116692409 is an equidigital number, since it uses as much as digits as its factorization.

116692409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5073606.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 116692409 is about 10802.4260701011. The cubic root of 116692409 is about 488.6683389970.

The spelling of 116692409 in words is "one hundred sixteen million, six hundred ninety-two thousand, four hundred nine".