249194091 has 8 divisors (see below), whose sum is σ = 332444224. Its totient is φ = 166036680.

The previous prime is 249194087. The next prime is 249194093. The reversal of 249194091 is 190491942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 249194091 - 2² = 249194087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249194093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16645 + ... + 27846.

It is an arithmetic number, because the mean of its divisors is an integer number (41555528).

Almost surely, 2^249194091 is an apocalyptic number.

249194091 is a deficient number, since it is larger than the sum of its proper divisors (83250133).

249194091 is a wasteful number, since it uses less digits than its factorization.

249194091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46361.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 249194091 is about 15785.8826487466. The cubic root of 249194091 is about 629.2828751172.

The spelling of 249194091 in words is "two hundred forty-nine million, one hundred ninety-four thousand, ninety-one".