13896478 has 4 divisors (see below), whose sum is σ = 20844720. Its totient is φ = 6948238.

The previous prime is 13896473. The next prime is 13896479. The reversal of 13896478 is 87469831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87469831 = 233 ⋅375407.

It is a super-2 number, since 2×13896478² = 386224201608968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13896473) 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 as a sum of consecutive naturals, namely, 3474118 + ... + 3474121.

It is an arithmetic number, because the mean of its divisors is an integer number (5211180).

Almost surely, 2^13896478 is an apocalyptic number.

13896478 is a deficient number, since it is larger than the sum of its proper divisors (6948242).

13896478 is an equidigital number, since it uses as much as digits as its factorization.

13896478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6948241.

The product of its digits is 290304, while the sum is 46.

The square root of 13896478 is about 3727.7980095493. The cubic root of 13896478 is about 240.4187019816.

The spelling of 13896478 in words is "thirteen million, eight hundred ninety-six thousand, four hundred seventy-eight".