117146909 has 4 divisors (see below), whose sum is σ = 127796640. Its totient is φ = 106497180.

The previous prime is 117146899. The next prime is 117146927. The reversal of 117146909 is 909641711.

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.

It is a cyclic number.

It is not a de Polignac number, because 117146909 - 2⁴ = 117146893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117146999) 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, 5324849 + ... + 5324870.

It is an arithmetic number, because the mean of its divisors is an integer number (31949160).

Almost surely, 2^117146909 is an apocalyptic number.

It is an amenable number.

117146909 is a deficient number, since it is larger than the sum of its proper divisors (10649731).

117146909 is a wasteful number, since it uses less digits than its factorization.

117146909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10649730.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 117146909 is about 10823.4425669470. The cubic root of 117146909 is about 489.3019478596.

The spelling of 117146909 in words is "one hundred seventeen million, one hundred forty-six thousand, nine hundred nine".