196088391 has 8 divisors (see below), whose sum is σ = 290501360. Its totient is φ = 130725576.

The previous prime is 196088359. The next prime is 196088429. The reversal of 196088391 is 193880691.

196088391 is a `hidden beast` number, since 1 + 9 + 608 + 8 + 39 + 1 = 666.

It is not a de Polignac number, because 196088391 - 2⁵ = 196088359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196088891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3631240 + ... + 3631293.

It is an arithmetic number, because the mean of its divisors is an integer number (36312670).

Almost surely, 2^196088391 is an apocalyptic number.

196088391 is a deficient number, since it is larger than the sum of its proper divisors (94412969).

196088391 is an equidigital number, since it uses as much as digits as its factorization.

196088391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262542 (or 7262536 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 196088391 is about 14003.1564655973. The cubic root of 196088391 is about 580.9658807060.

The spelling of 196088391 in words is "one hundred ninety-six million, eighty-eight thousand, three hundred ninety-one".