15098989 has 4 divisors (see below), whose sum is σ = 15108156. Its totient is φ = 15089824.

The previous prime is 15098987. The next prime is 15099023. The reversal of 15098989 is 98989051.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98989051 = 7 ⋅14141293.

It can be written as a sum of positive squares in 2 ways, for example, as 6543364 + 8555625 = 2558^2 + 2925^2 .

It is a cyclic number.

It is not a de Polignac number, because 15098989 - 2¹ = 15098987 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 (15098983) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1354 + ... + 5659.

It is an arithmetic number, because the mean of its divisors is an integer number (3777039).

Almost surely, 2^15098989 is an apocalyptic number.

It is an amenable number.

15098989 is a deficient number, since it is larger than the sum of its proper divisors (9167).

15098989 is an equidigital number, since it uses as much as digits as its factorization.

15098989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9166.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 15098989 is about 3885.7417567306. The cubic root of 15098989 is about 247.1625247789.

The spelling of 15098989 in words is "fifteen million, ninety-eight thousand, nine hundred eighty-nine".