117397737 has 6 divisors (see below), whose sum is σ = 169574522. Its totient is φ = 78265152.

The previous prime is 117397723. The next prime is 117397741. The reversal of 117397737 is 737793711.

It can be written as a sum of positive squares in only one way, i.e., 81649296 + 35748441 = 9036^2 + 5979^2 .

It is not a de Polignac number, because 117397737 - 2¹² = 117393641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117397692 and 117397701.

It is not an unprimeable number, because it can be changed into a prime (117397757) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6522088 + ... + 6522105.

Almost surely, 2^117397737 is an apocalyptic number.

It is an amenable number.

117397737 is a deficient number, since it is larger than the sum of its proper divisors (52176785).

117397737 is a wasteful number, since it uses less digits than its factorization.

117397737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13044199 (or 13044196 counting only the distinct ones).

The product of its digits is 194481, while the sum is 45.

The square root of 117397737 is about 10835.0236271085. The cubic root of 117397737 is about 489.6509203295.

The spelling of 117397737 in words is "one hundred seventeen million, three hundred ninety-seven thousand, seven hundred thirty-seven".