117074891 has 2 divisors, whose sum is σ = 117074892. Its totient is φ = 117074890.

The previous prime is 117074873. The next prime is 117074897. The reversal of 117074891 is 198470711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117074891 - 2¹⁸ = 116812747 is a prime.

It is not a weakly prime, because it can be changed into another prime (117074897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58537445 + 58537446.

It is an arithmetic number, because the mean of its divisors is an integer number (58537446).

Almost surely, 2^117074891 is an apocalyptic number.

117074891 is a deficient number, since it is larger than the sum of its proper divisors (1).

117074891 is an equidigital number, since it uses as much as digits as its factorization.

117074891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 38.

The square root of 117074891 is about 10820.1151102934. The cubic root of 117074891 is about 489.2016584833.

The spelling of 117074891 in words is "one hundred seventeen million, seventy-four thousand, eight hundred ninety-one".