191979214 has 8 divisors (see below), whose sum is σ = 329107248. Its totient is φ = 82276800.

The previous prime is 191979209. The next prime is 191979239. The reversal of 191979214 is 412979191.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6856387 + ... + 6856414.

It is an arithmetic number, because the mean of its divisors is an integer number (41138406).

Almost surely, 2^191979214 is an apocalyptic number.

191979214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

191979214 is a deficient number, since it is larger than the sum of its proper divisors (137128034).

191979214 is a wasteful number, since it uses less digits than its factorization.

191979214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13712810.

The product of its digits is 40824, while the sum is 43.

The square root of 191979214 is about 13855.6563900813. The cubic root of 191979214 is about 576.8790088997.

The spelling of 191979214 in words is "one hundred ninety-one million, nine hundred seventy-nine thousand, two hundred fourteen".