16439244 has 24 divisors (see below), whose sum is σ = 39251520. Its totient is φ = 5352144.

The previous prime is 16439243. The next prime is 16439249. The reversal of 16439244 is 44293461.

It is not an unprimeable number, because it can be changed into a prime (16439243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15414 + ... + 16445.

It is an arithmetic number, because the mean of its divisors is an integer number (1635480).

Almost surely, 2^16439244 is an apocalyptic number.

It is an amenable number.

16439244 is an abundant number, since it is smaller than the sum of its proper divisors (22812276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16439244 is a wasteful number, since it uses less digits than its factorization.

16439244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31909 (or 31907 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 16439244 is about 4054.5337586460. The cubic root of 16439244 is about 254.2693115588.

The spelling of 16439244 in words is "sixteen million, four hundred thirty-nine thousand, two hundred forty-four".