13478399 has 8 divisors (see below), whose sum is σ = 15568848. Its totient is φ = 11532160.

The previous prime is 13478389. The next prime is 13478401. The reversal of 13478399 is 99387431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13478399 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 (13478329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35852 + ... + 36225.

It is an arithmetic number, because the mean of its divisors is an integer number (1946106).

Almost surely, 2^13478399 is an apocalyptic number.

13478399 is a deficient number, since it is larger than the sum of its proper divisors (2090449).

13478399 is a wasteful number, since it uses less digits than its factorization.

13478399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72105.

The product of its digits is 163296, while the sum is 44.

The square root of 13478399 is about 3671.2939135950. The cubic root of 13478399 is about 237.9830920362.

The spelling of 13478399 in words is "thirteen million, four hundred seventy-eight thousand, three hundred ninety-nine".