16039937 has 4 divisors (see below), whose sum is σ = 16121556. Its totient is φ = 15958320.

The previous prime is 16039921. The next prime is 16039957. The reversal of 16039937 is 73993061.

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 15808576 + 231361 = 3976^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 16039937 - 2⁴ = 16039921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16039937.

It is not an unprimeable number, because it can be changed into a prime (16039957) 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, 40514 + ... + 40907.

It is an arithmetic number, because the mean of its divisors is an integer number (4030389).

It is a Proth number, since it is equal to 979 ⋅ 2¹⁴ + 1 and 979 < 2¹⁴.

Almost surely, 2^16039937 is an apocalyptic number.

It is an amenable number.

16039937 is a deficient number, since it is larger than the sum of its proper divisors (81619).

16039937 is an equidigital number, since it uses as much as digits as its factorization.

16039937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81618.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 16039937 is about 4004.9890137178. The cubic root of 16039937 is about 252.1936918946.

The spelling of 16039937 in words is "sixteen million, thirty-nine thousand, nine hundred thirty-seven".