117689451 has 16 divisors (see below), whose sum is σ = 171393408. Its totient is φ = 71240000.

The previous prime is 117689399. The next prime is 117689461. The reversal of 117689451 is 154986711.

It is a cyclic number.

It is not a de Polignac number, because 117689451 - 2¹⁰ = 117688427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117689461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34576 + ... + 37826.

It is an arithmetic number, because the mean of its divisors is an integer number (10712088).

Almost surely, 2^117689451 is an apocalyptic number.

117689451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117689451 is a deficient number, since it is larger than the sum of its proper divisors (53703957).

117689451 is a wasteful number, since it uses less digits than its factorization.

117689451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362.

The product of its digits is 60480, while the sum is 42.

The square root of 117689451 is about 10848.4768977032. The cubic root of 117689451 is about 490.0561521100.

The spelling of 117689451 in words is "one hundred seventeen million, six hundred eighty-nine thousand, four hundred fifty-one".