199031039 has 4 divisors (see below), whose sum is σ = 200130840. Its totient is φ = 197931240.

The previous prime is 199031033. The next prime is 199031083. The reversal of 199031039 is 930130991.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199031039 is a prime.

It is a super-2 number, since 2×199031039² = 79226708970839042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199031033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549629 + ... + 549990.

It is an arithmetic number, because the mean of its divisors is an integer number (50032710).

Almost surely, 2^199031039 is an apocalyptic number.

199031039 is a deficient number, since it is larger than the sum of its proper divisors (1099801).

199031039 is a wasteful number, since it uses less digits than its factorization.

199031039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099800.

The product of its (nonzero) digits is 6561, while the sum is 35.

The square root of 199031039 is about 14107.8360849565. The cubic root of 199031039 is about 583.8575986305.

The spelling of 199031039 in words is "one hundred ninety-nine million, thirty-one thousand, thirty-nine".