13981798 has 8 divisors (see below), whose sum is σ = 21028608. Its totient is φ = 6972264.

The previous prime is 13981789. The next prime is 13981801. The reversal of 13981798 is 89718931.

13981798 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 3×13981798³ (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, 8361 + ... + 9892.

It is an arithmetic number, because the mean of its divisors is an integer number (2628576).

Almost surely, 2^13981798 is an apocalyptic number.

13981798 is a deficient number, since it is larger than the sum of its proper divisors (7046810).

13981798 is a wasteful number, since it uses less digits than its factorization.

13981798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18638.

The product of its digits is 108864, while the sum is 46.

The square root of 13981798 is about 3739.2242510981. The cubic root of 13981798 is about 240.9097301428.

The spelling of 13981798 in words is "thirteen million, nine hundred eighty-one thousand, seven hundred ninety-eight".