16039444 has 6 divisors (see below), whose sum is σ = 28069034. Its totient is φ = 8019720.

The previous prime is 16039427. The next prime is 16039451. The reversal of 16039444 is 44493061.

It can be written as a sum of positive squares in only one way, i.e., 13046544 + 2992900 = 3612^2 + 1730^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004927 + ... + 2004934.

Almost surely, 2^16039444 is an apocalyptic number.

It is an amenable number.

16039444 is a deficient number, since it is larger than the sum of its proper divisors (12029590).

16039444 is a wasteful number, since it uses less digits than its factorization.

16039444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009865 (or 4009863 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 16039444 is about 4004.9274650111. The cubic root of 16039444 is about 252.1911080780.

The spelling of 16039444 in words is "sixteen million, thirty-nine thousand, four hundred forty-four".