949390191 has 6 divisors (see below), whose sum is σ = 1371341400. Its totient is φ = 632926788.

The previous prime is 949390187. The next prime is 949390193. The reversal of 949390191 is 191093949.

It is not a de Polignac number, because 949390191 - 2² = 949390187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (949390193) 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 5 ways as a sum of consecutive naturals, for example, 52743891 + ... + 52743908.

It is an arithmetic number, because the mean of its divisors is an integer number (228556900).

Almost surely, 2^949390191 is an apocalyptic number.

949390191 is a deficient number, since it is larger than the sum of its proper divisors (421951209).

949390191 is a wasteful number, since it uses less digits than its factorization.

949390191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105487805 (or 105487802 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The square root of 949390191 is about 30812.1760185807. The cubic root of 949390191 is about 982.8371866773.

The spelling of 949390191 in words is "nine hundred forty-nine million, three hundred ninety thousand, one hundred ninety-one".