15489049 has 4 divisors (see below), whose sum is σ = 15575760. Its totient is φ = 15402340.

The previous prime is 15489043. The next prime is 15489053. The reversal of 15489049 is 94098451.

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.

It is a cyclic number.

It is not a de Polignac number, because 15489049 - 2⁹ = 15488537 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15489043) 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, 43087 + ... + 43444.

It is an arithmetic number, because the mean of its divisors is an integer number (3893940).

Almost surely, 2^15489049 is an apocalyptic number.

It is an amenable number.

15489049 is a deficient number, since it is larger than the sum of its proper divisors (86711).

15489049 is an equidigital number, since it uses as much as digits as its factorization.

15489049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86710.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 15489049 is about 3935.6129128765. The cubic root of 15489049 is about 249.2728148579.

The spelling of 15489049 in words is "fifteen million, four hundred eighty-nine thousand, forty-nine".