117429391 has 2 divisors, whose sum is σ = 117429392. Its totient is φ = 117429390.

The previous prime is 117429383. The next prime is 117429409. The reversal of 117429391 is 193924711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117429391 - 2³ = 117429383 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117429391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117429341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58714695 + 58714696.

It is an arithmetic number, because the mean of its divisors is an integer number (58714696).

Almost surely, 2^117429391 is an apocalyptic number.

117429391 is a deficient number, since it is larger than the sum of its proper divisors (1).

117429391 is an equidigital number, since it uses as much as digits as its factorization.

117429391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 37.

The square root of 117429391 is about 10836.4842545911. The cubic root of 117429391 is about 489.6949246343.

The spelling of 117429391 in words is "one hundred seventeen million, four hundred twenty-nine thousand, three hundred ninety-one".