16039969 has 4 divisors (see below), whose sum is σ = 17498160. Its totient is φ = 14581780.

The previous prime is 16039963. The next prime is 16040053. The reversal of 16039969 is 96993061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16039969 - 2⁷ = 16039841 is a prime.

It is a super-2 number, since 2×16039969² = 514561211041922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16039963) 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, 729079 + ... + 729100.

It is an arithmetic number, because the mean of its divisors is an integer number (4374540).

Almost surely, 2^16039969 is an apocalyptic number.

It is an amenable number.

16039969 is a deficient number, since it is larger than the sum of its proper divisors (1458191).

16039969 is a wasteful number, since it uses less digits than its factorization.

16039969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458190.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 16039969 is about 4004.9930087330. The cubic root of 16039969 is about 252.1938596050.

The spelling of 16039969 in words is "sixteen million, thirty-nine thousand, nine hundred sixty-nine".