117990447 has 8 divisors (see below), whose sum is σ = 161572656. Its totient is φ = 76534272.

The previous prime is 117990413. The next prime is 117990449. The reversal of 117990447 is 744099711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117990447 - 2¹⁹ = 117466159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117990399 and 117990408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117990449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531378 + ... + 531599.

It is an arithmetic number, because the mean of its divisors is an integer number (20196582).

Almost surely, 2^117990447 is an apocalyptic number.

117990447 is a deficient number, since it is larger than the sum of its proper divisors (43582209).

117990447 is a wasteful number, since it uses less digits than its factorization.

117990447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063017.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 117990447 is about 10862.3407698341. The cubic root of 117990447 is about 490.4735765790.

The spelling of 117990447 in words is "one hundred seventeen million, nine hundred ninety thousand, four hundred forty-seven".