16122489 has 4 divisors (see below), whose sum is σ = 21496656. Its totient is φ = 10748324.

The previous prime is 16122481. The next prime is 16122497. The reversal of 16122489 is 98422161.

16122489 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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: 98422161 = 3 ⋅32807387.

It is an interprime number because it is at equal distance from previous prime (16122481) and next prime (16122497).

It is a cyclic number.

It is not a de Polignac number, because 16122489 - 2³ = 16122481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16122481) 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, 2687079 + ... + 2687084.

It is an arithmetic number, because the mean of its divisors is an integer number (5374164).

Almost surely, 2^16122489 is an apocalyptic number.

It is an amenable number.

16122489 is a deficient number, since it is larger than the sum of its proper divisors (5374167).

16122489 is an equidigital number, since it uses as much as digits as its factorization.

16122489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374166.

The product of its digits is 6912, while the sum is 33.

The square root of 16122489 is about 4015.2819328162. The cubic root of 16122489 is about 252.6256029676.

The spelling of 16122489 in words is "sixteen million, one hundred twenty-two thousand, four hundred eighty-nine".