15614989 has 4 divisors (see below), whose sum is σ = 16816156. Its totient is φ = 14413824.

The previous prime is 15614983. The next prime is 15615007. The reversal of 15614989 is 98941651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98941651 = 41 ⋅2413211.

It can be written as a sum of positive squares in 2 ways, for example, as 3132900 + 12482089 = 1770^2 + 3533^2 .

It is a cyclic number.

It is not a de Polignac number, because 15614989 - 2³ = 15614981 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 (15614981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600564 + ... + 600589.

It is an arithmetic number, because the mean of its divisors is an integer number (4204039).

Almost surely, 2^15614989 is an apocalyptic number.

It is an amenable number.

15614989 is a deficient number, since it is larger than the sum of its proper divisors (1201167).

15614989 is a wasteful number, since it uses less digits than its factorization.

15614989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201166.

The product of its digits is 77760, while the sum is 43.

The square root of 15614989 is about 3951.5805698480. The cubic root of 15614989 is about 249.9465965931.

The spelling of 15614989 in words is "fifteen million, six hundred fourteen thousand, nine hundred eighty-nine".