13089478 has 4 divisors (see below), whose sum is σ = 19634220. Its totient is φ = 6544738.

The previous prime is 13089467. The next prime is 13089481. The reversal of 13089478 is 87498031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87498031 = 17 ⋅5146943.

It is a super-3 number, since 3×13089478³ (a number of 22 digits) contains 333 as substring.

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 self number, because there is not a number n which added to its sum of digits gives 13089478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272368 + ... + 3272371.

It is an arithmetic number, because the mean of its divisors is an integer number (4908555).

Almost surely, 2^13089478 is an apocalyptic number.

13089478 is a deficient number, since it is larger than the sum of its proper divisors (6544742).

13089478 is an equidigital number, since it uses as much as digits as its factorization.

13089478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544741.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 13089478 is about 3617.9383632118. The cubic root of 13089478 is about 235.6717043026.

The spelling of 13089478 in words is "thirteen million, eighty-nine thousand, four hundred seventy-eight".