13899478 has 8 divisors (see below), whose sum is σ = 20875968. Its totient is φ = 6940824.

The previous prime is 13899463. The next prime is 13899481. The reversal of 13899478 is 87499831.

It is a happy number.

13899478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-3 number, since 3×13899478³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2301 + ... + 5752.

It is an arithmetic number, because the mean of its divisors is an integer number (2609496).

Almost surely, 2^13899478 is an apocalyptic number.

13899478 is a deficient number, since it is larger than the sum of its proper divisors (6976490).

13899478 is an equidigital number, since it uses as much as digits as its factorization.

13899478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8918.

The product of its digits is 435456, while the sum is 49.

The square root of 13899478 is about 3728.2003701518. The cubic root of 13899478 is about 240.4360014300.

The spelling of 13899478 in words is "thirteen million, eight hundred ninety-nine thousand, four hundred seventy-eight".