16248989 has 4 divisors (see below), whose sum is σ = 16477920. Its totient is φ = 16020060.

The previous prime is 16248983. The next prime is 16249001. The reversal of 16248989 is 98984261.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98984261 = 157 ⋅630473.

It is a cyclic number.

It is not a de Polignac number, because 16248989 - 2⁸ = 16248733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16248983) 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, 114359 + ... + 114500.

It is an arithmetic number, because the mean of its divisors is an integer number (4119480).

Almost surely, 2^16248989 is an apocalyptic number.

It is an amenable number.

16248989 is a deficient number, since it is larger than the sum of its proper divisors (228931).

16248989 is an equidigital number, since it uses as much as digits as its factorization.

16248989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228930.

The product of its digits is 248832, while the sum is 47.

The square root of 16248989 is about 4031.0034730821. The cubic root of 16248989 is about 253.2845980043.

The spelling of 16248989 in words is "sixteen million, two hundred forty-eight thousand, nine hundred eighty-nine".