191479966 has 8 divisors (see below), whose sum is σ = 287304624. Its totient is φ = 95711760.

The previous prime is 191479943. The next prime is 191479997. The reversal of 191479966 is 669974191.

191479966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×191479966² = 73329154758722312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4255 + ... + 20026.

It is an arithmetic number, because the mean of its divisors is an integer number (35913078).

Almost surely, 2^191479966 is an apocalyptic number.

191479966 is a deficient number, since it is larger than the sum of its proper divisors (95824658).

191479966 is a wasteful number, since it uses less digits than its factorization.

191479966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28226.

The product of its digits is 734832, while the sum is 52.

The square root of 191479966 is about 13837.6286263218. The cubic root of 191479966 is about 576.3785107769.

The spelling of 191479966 in words is "one hundred ninety-one million, four hundred seventy-nine thousand, nine hundred sixty-six".