16239289 has 12 divisors (see below), whose sum is σ = 18036928. Its totient is φ = 14608440.

The previous prime is 16239287. The next prime is 16239313. The reversal of 16239289 is 98293261.

It is a happy number.

It is not a de Polignac number, because 16239289 - 2¹ = 16239287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16239287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11812 + ... + 13114.

Almost surely, 2^16239289 is an apocalyptic number.

It is an amenable number.

16239289 is a deficient number, since it is larger than the sum of its proper divisors (1797639).

16239289 is a wasteful number, since it uses less digits than its factorization.

16239289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428 (or 1417 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 16239289 is about 4029.8001191126. The cubic root of 16239289 is about 253.2341876958.

The spelling of 16239289 in words is "sixteen million, two hundred thirty-nine thousand, two hundred eighty-nine".