117990629 has 4 divisors (see below), whose sum is σ = 118150176. Its totient is φ = 117831084.

The previous prime is 117990623. The next prime is 117990637. The reversal of 117990629 is 926099711.

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: 926099711 = 761 ⋅1216951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117990629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117990629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117990623) 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, 78659 + ... + 80144.

It is an arithmetic number, because the mean of its divisors is an integer number (29537544).

Almost surely, 2^117990629 is an apocalyptic number.

It is an amenable number.

117990629 is a deficient number, since it is larger than the sum of its proper divisors (159547).

117990629 is an equidigital number, since it uses as much as digits as its factorization.

117990629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159546.

The product of its (nonzero) digits is 61236, while the sum is 44.

The square root of 117990629 is about 10862.3491473990. The cubic root of 117990629 is about 490.4738287637.

The spelling of 117990629 in words is "one hundred seventeen million, nine hundred ninety thousand, six hundred twenty-nine".