117390405 has 32 divisors (see below), whose sum is σ = 211973760. Its totient is φ = 54951680.

The previous prime is 117390391. The next prime is 117390431. The reversal of 117390405 is 504093711.

It is not a de Polignac number, because 117390405 - 2⁵ = 117390373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7482 + ... + 17051.

It is an arithmetic number, because the mean of its divisors is an integer number (6624180).

Almost surely, 2^117390405 is an apocalyptic number.

117390405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117390405 is a deficient number, since it is larger than the sum of its proper divisors (94583355).

117390405 is a wasteful number, since it uses less digits than its factorization.

117390405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24581.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 117390405 is about 10834.6852746169. The cubic root of 117390405 is about 489.6407265064.

The spelling of 117390405 in words is "one hundred seventeen million, three hundred ninety thousand, four hundred five".