117839669 has 4 divisors (see below), whose sum is σ = 120346944. Its totient is φ = 115332396.

The previous prime is 117839633. The next prime is 117839671. The reversal of 117839669 is 966938711.

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: 966938711 = 41 ⋅23583871.

It is a cyclic number.

It is not a de Polignac number, because 117839669 - 2¹² = 117835573 is a prime.

It is a super-2 number, since 2×117839669² = 27772375180059122, 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 (117839369) 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 3 ways as a sum of consecutive naturals, for example, 1253567 + ... + 1253660.

It is an arithmetic number, because the mean of its divisors is an integer number (30086736).

Almost surely, 2^117839669 is an apocalyptic number.

It is an amenable number.

117839669 is a deficient number, since it is larger than the sum of its proper divisors (2507275).

117839669 is an equidigital number, since it uses as much as digits as its factorization.

117839669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507274.

The product of its digits is 489888, while the sum is 50.

The square root of 117839669 is about 10855.3981502292. The cubic root of 117839669 is about 490.2645648889.

The spelling of 117839669 in words is "one hundred seventeen million, eight hundred thirty-nine thousand, six hundred sixty-nine".