15472489 has 2 divisors, whose sum is σ = 15472490. Its totient is φ = 15472488.

The previous prime is 15472487. The next prime is 15472519. The reversal of 15472489 is 98427451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15342889 + 129600 = 3917^2 + 360^2 .

It is an emirp because it is prime and its reverse (98427451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15472489 - 2¹ = 15472487 is a prime.

Together with 15472487, it forms a pair of twin primes.

It is equal to p₉₉₉₁₉₃ and since 15472489 and 999193 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (15472481) 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 as a sum of consecutive naturals, namely, 7736244 + 7736245.

It is an arithmetic number, because the mean of its divisors is an integer number (7736245).

Almost surely, 2^15472489 is an apocalyptic number.

It is an amenable number.

15472489 is a deficient number, since it is larger than the sum of its proper divisors (1).

15472489 is an equidigital number, since it uses as much as digits as its factorization.

15472489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 15472489 is about 3933.5084848008. The cubic root of 15472489 is about 249.1839471292.

The spelling of 15472489 in words is "fifteen million, four hundred seventy-two thousand, four hundred eighty-nine".