117409897 has 4 divisors (see below), whose sum is σ = 128083536. Its totient is φ = 106736260.

The previous prime is 117409847. The next prime is 117409907. The reversal of 117409897 is 798904711.

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: 798904711 = 11 ⋅72627701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117409897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117409847) 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, 5336803 + ... + 5336824.

It is an arithmetic number, because the mean of its divisors is an integer number (32020884).

Almost surely, 2^117409897 is an apocalyptic number.

It is an amenable number.

117409897 is a deficient number, since it is larger than the sum of its proper divisors (10673639).

117409897 is a wasteful number, since it uses less digits than its factorization.

117409897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10673638.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 117409897 is about 10835.5847557942. The cubic root of 117409897 is about 489.6678256798.

It can be divided in two parts, 117 and 409897, that added together give a palindrome (410014).

The spelling of 117409897 in words is "one hundred seventeen million, four hundred nine thousand, eight hundred ninety-seven".