117900439 has 2 divisors, whose sum is σ = 117900440. Its totient is φ = 117900438.

The previous prime is 117900407. The next prime is 117900449. The reversal of 117900439 is 934009711.

It is a strong prime.

It is an emirp because it is prime and its reverse (934009711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117900439 - 2⁵ = 117900407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117900449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58950219 + 58950220.

It is an arithmetic number, because the mean of its divisors is an integer number (58950220).

Almost surely, 2^117900439 is an apocalyptic number.

117900439 is a deficient number, since it is larger than the sum of its proper divisors (1).

117900439 is an equidigital number, since it uses as much as digits as its factorization.

117900439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 117900439 is about 10858.1968576739. The cubic root of 117900439 is about 490.3488269992.

The spelling of 117900439 in words is "one hundred seventeen million, nine hundred thousand, four hundred thirty-nine".