199486937 has 4 divisors (see below), whose sum is σ = 214832100. Its totient is φ = 184141776.

The previous prime is 199486927. The next prime is 199486949. The reversal of 199486937 is 739684991.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16128256 + 183358681 = 4016^2 + 13541^2 .

It is not a de Polignac number, because 199486937 - 2⁴ = 199486921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199486927) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 7672562 + ... + 7672587.

It is an arithmetic number, because the mean of its divisors is an integer number (53708025).

Almost surely, 2^199486937 is an apocalyptic number.

It is an amenable number.

199486937 is a deficient number, since it is larger than the sum of its proper divisors (15345163).

199486937 is a wasteful number, since it uses less digits than its factorization.

199486937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15345162.

The product of its digits is 2939328, while the sum is 56.

The square root of 199486937 is about 14123.9844590682. The cubic root of 199486937 is about 584.3030509835.

The spelling of 199486937 in words is "one hundred ninety-nine million, four hundred eighty-six thousand, nine hundred thirty-seven".