15140989 has 4 divisors (see below), whose sum is σ = 15629440. Its totient is φ = 14652540.

The previous prime is 15140981. The next prime is 15141001. The reversal of 15140989 is 98904151.

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: 98904151 = 1459 ⋅67789.

It is a cyclic number.

It is not a de Polignac number, because 15140989 - 2³ = 15140981 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 (15140981) 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, 244179 + ... + 244240.

It is an arithmetic number, because the mean of its divisors is an integer number (3907360).

Almost surely, 2^15140989 is an apocalyptic number.

It is an amenable number.

15140989 is a deficient number, since it is larger than the sum of its proper divisors (488451).

15140989 is an equidigital number, since it uses as much as digits as its factorization.

15140989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488450.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 15140989 is about 3891.1423772460. The cubic root of 15140989 is about 247.3914852662.

It can be divided in two parts, 15140 and 989, that added together give a square (16129 = 127²).

The spelling of 15140989 in words is "fifteen million, one hundred forty thousand, nine hundred eighty-nine".