199299745 has 8 divisors (see below), whose sum is σ = 247406760. Its totient is φ = 153941760.

The previous prime is 199299733. The next prime is 199299757. The reversal of 199299745 is 547992991.

It is an interprime number because it is at equal distance from previous prime (199299733) and next prime (199299757).

It can be written as a sum of positive squares in 4 ways, for example, as 8196769 + 191102976 = 2863^2 + 13824^2 .

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

It is not a de Polignac number, because 199299745 - 2¹³ = 199291553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687096 + ... + 687385.

It is an arithmetic number, because the mean of its divisors is an integer number (30925845).

Almost surely, 2^199299745 is an apocalyptic number.

It is an amenable number.

199299745 is a deficient number, since it is larger than the sum of its proper divisors (48107015).

199299745 is a wasteful number, since it uses less digits than its factorization.

199299745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374515.

The product of its digits is 1837080, while the sum is 55.

The square root of 199299745 is about 14117.3561618314. The cubic root of 199299745 is about 584.1202301798.

The spelling of 199299745 in words is "one hundred ninety-nine million, two hundred ninety-nine thousand, seven hundred forty-five".