13891490 has 8 divisors (see below), whose sum is σ = 25004700. Its totient is φ = 5556592.

The previous prime is 13891483. The next prime is 13891513. The reversal of 13891490 is 9419831.

It can be written as a sum of positive squares in 2 ways, for example, as 13890529 + 961 = 3727^2 + 31^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 13891490.

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, 694565 + ... + 694584.

Almost surely, 2^13891490 is an apocalyptic number.

13891490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13891490 is a deficient number, since it is larger than the sum of its proper divisors (11113210).

13891490 is a wasteful number, since it uses less digits than its factorization.

13891490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389156.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 13891490 is about 3727.1289218378. The cubic root of 13891490 is about 240.3899332534.

The spelling of 13891490 in words is "thirteen million, eight hundred ninety-one thousand, four hundred ninety".