199989535 has 16 divisors (see below), whose sum is σ = 252984960. Its totient is φ = 151351200.

The previous prime is 199989529. The next prime is 199989541. The reversal of 199989535 is 535989991.

It is an interprime number because it is at equal distance from previous prime (199989529) and next prime (199989541).

It is not a de Polignac number, because 199989535 - 2⁷ = 199989407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199989535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98844 + ... + 100846.

It is an arithmetic number, because the mean of its divisors is an integer number (15811560).

Almost surely, 2^199989535 is an apocalyptic number.

199989535 is a deficient number, since it is larger than the sum of its proper divisors (52995425).

199989535 is a wasteful number, since it uses less digits than its factorization.

199989535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078.

The product of its digits is 3936600, while the sum is 58.

The square root of 199989535 is about 14141.7656252676. The cubic root of 199989535 is about 584.7933475161.

The spelling of 199989535 in words is "one hundred ninety-nine million, nine hundred eighty-nine thousand, five hundred thirty-five".