199079402 has 4 divisors (see below), whose sum is σ = 298619106. Its totient is φ = 99539700.

The previous prime is 199079399. The next prime is 199079411. The reversal of 199079402 is 204970991.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 191794801 + 7284601 = 13849^2 + 2699^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 199079402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49769849 + ... + 49769852.

Almost surely, 2^199079402 is an apocalyptic number.

199079402 is a deficient number, since it is larger than the sum of its proper divisors (99539704).

199079402 is an equidigital number, since it uses as much as digits as its factorization.

199079402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99539703.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 199079402 is about 14109.5500282610. The cubic root of 199079402 is about 583.9048857578.

The spelling of 199079402 in words is "one hundred ninety-nine million, seventy-nine thousand, four hundred two".