12950191 has 4 divisors (see below), whose sum is σ = 13631800. Its totient is φ = 12268584.

The previous prime is 12950183. The next prime is 12950221. The reversal of 12950191 is 19105921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12950191 - 2³ = 12950183 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 (12950101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340776 + ... + 340813.

It is an arithmetic number, because the mean of its divisors is an integer number (3407950).

Almost surely, 2^12950191 is an apocalyptic number.

12950191 is a deficient number, since it is larger than the sum of its proper divisors (681609).

12950191 is an equidigital number, since it uses as much as digits as its factorization.

12950191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681608.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 12950191 is about 3598.6373810097. The cubic root of 12950191 is about 234.8327828082.

The spelling of 12950191 in words is "twelve million, nine hundred fifty thousand, one hundred ninety-one".