117739651 has 4 divisors (see below), whose sum is σ = 118530000. Its totient is φ = 116949304.

The previous prime is 117739649. The next prime is 117739669. The reversal of 117739651 is 156937711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156937711 = 7 ⋅22419673.

It is a cyclic number.

It is not a de Polignac number, because 117739651 - 2¹ = 117739649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117739621) 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, 394951 + ... + 395248.

It is an arithmetic number, because the mean of its divisors is an integer number (29632500).

Almost surely, 2^117739651 is an apocalyptic number.

117739651 is a deficient number, since it is larger than the sum of its proper divisors (790349).

117739651 is an equidigital number, since it uses as much as digits as its factorization.

117739651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790348.

The product of its digits is 39690, while the sum is 40.

The square root of 117739651 is about 10850.7903398785. The cubic root of 117739651 is about 490.1258194185.

The spelling of 117739651 in words is "one hundred seventeen million, seven hundred thirty-nine thousand, six hundred fifty-one".