117849621 has 32 divisors (see below), whose sum is σ = 166239360. Its totient is φ = 74188800.

The previous prime is 117849587. The next prime is 117849637. The reversal of 117849621 is 126948711.

It is not a de Polignac number, because 117849621 - 2¹⁰ = 117848597 is a prime.

It is a super-3 number, since 3×117849621³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117849621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117849691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 847770 + ... + 847908.

It is an arithmetic number, because the mean of its divisors is an integer number (5194980).

Almost surely, 2^117849621 is an apocalyptic number.

It is an amenable number.

117849621 is a deficient number, since it is larger than the sum of its proper divisors (48389739).

117849621 is a wasteful number, since it uses less digits than its factorization.

117849621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its digits is 24192, while the sum is 39.

The square root of 117849621 is about 10855.8565300026. The cubic root of 117849621 is about 490.2783660580.

The spelling of 117849621 in words is "one hundred seventeen million, eight hundred forty-nine thousand, six hundred twenty-one".