117978944 has 14 divisors (see below), whose sum is σ = 234114594. Its totient is φ = 58989440.

The previous prime is 117978943. The next prime is 117978947. The reversal of 117978944 is 449879711.

It can be written as a sum of positive squares in only one way, i.e., 117505600 + 473344 = 10840^2 + 688^2 .

It is a junction number, because it is equal to n+sod(n) for n = 117978892 and 117978901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117978943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921647 + ... + 921774.

It is an arithmetic number, because the mean of its divisors is an integer number (16722471).

Almost surely, 2^117978944 is an apocalyptic number.

It is an amenable number.

117978944 is a deficient number, since it is larger than the sum of its proper divisors (116135650).

117978944 is an equidigital number, since it uses as much as digits as its factorization.

117978944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843433 (or 1843423 counting only the distinct ones).

The product of its digits is 508032, while the sum is 50.

The square root of 117978944 is about 10861.8112670033. The cubic root of 117978944 is about 490.4576371504.

The spelling of 117978944 in words is "one hundred seventeen million, nine hundred seventy-eight thousand, nine hundred forty-four".