16199937 has 12 divisors (see below), whose sum is σ = 25200084. Its totient is φ = 9969120.

The previous prime is 16199921. The next prime is 16199971. The reversal of 16199937 is 73999161.

It can be written as a sum of positive squares in 2 ways, for example, as 3837681 + 12362256 = 1959^2 + 3516^2 .

It is not a de Polignac number, because 16199937 - 2⁴ = 16199921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16199892 and 16199901.

It is not an unprimeable number, because it can be changed into a prime (16199917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69114 + ... + 69347.

It is an arithmetic number, because the mean of its divisors is an integer number (2100007).

Almost surely, 2^16199937 is an apocalyptic number.

It is an amenable number.

16199937 is a deficient number, since it is larger than the sum of its proper divisors (9000147).

16199937 is a wasteful number, since it uses less digits than its factorization.

16199937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138480 (or 138477 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 16199937 is about 4024.9145332541. The cubic root of 16199937 is about 253.0294715885.

The spelling of 16199937 in words is "sixteen million, one hundred ninety-nine thousand, nine hundred thirty-seven".