199450379 has 2 divisors, whose sum is σ = 199450380. Its totient is φ = 199450378.

The previous prime is 199450301. The next prime is 199450397. The reversal of 199450379 is 973054991.

Together with next prime (199450397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199450379 is a prime.

It is a pancake number, because a pancake can be divided into 199450379 parts by 19972 straight cuts.

It is not a weakly prime, because it can be changed into another prime (199450399) 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 as a sum of consecutive naturals, namely, 99725189 + 99725190.

It is an arithmetic number, because the mean of its divisors is an integer number (99725190).

Almost surely, 2^199450379 is an apocalyptic number.

199450379 is a deficient number, since it is larger than the sum of its proper divisors (1).

199450379 is an equidigital number, since it uses as much as digits as its factorization.

199450379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 199450379 is about 14122.6902182268. The cubic root of 199450379 is about 584.2673556538.

The spelling of 199450379 in words is "one hundred ninety-nine million, four hundred fifty thousand, three hundred seventy-nine".