117383821 has 4 divisors (see below), whose sum is σ = 117489472. Its totient is φ = 117278172.

The previous prime is 117383813. The next prime is 117383831. The reversal of 117383821 is 128383711.

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.

It is a cyclic number.

It is not a de Polignac number, because 117383821 - 2³ = 117383813 is a prime.

It is a super-2 number, since 2×117383821² = 27557922865120082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117383801) 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, 51141 + ... + 53386.

It is an arithmetic number, because the mean of its divisors is an integer number (29372368).

Almost surely, 2^117383821 is an apocalyptic number.

It is an amenable number.

117383821 is a deficient number, since it is larger than the sum of its proper divisors (105651).

117383821 is a wasteful number, since it uses less digits than its factorization.

117383821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105650.

The product of its digits is 8064, while the sum is 34.

The square root of 117383821 is about 10834.3814313508. The cubic root of 117383821 is about 489.6315722806.

The spelling of 117383821 in words is "one hundred seventeen million, three hundred eighty-three thousand, eight hundred twenty-one".