13891450 has 12 divisors (see below), whose sum is σ = 25838190. Its totient is φ = 5556560.

The previous prime is 13891433. The next prime is 13891453. The reversal of 13891450 is 5419831.

It can be written as a sum of positive squares in 3 ways, for example, as 13535041 + 356409 = 3679^2 + 597^2 .

It is not an unprimeable number, because it can be changed into a prime (13891453) 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 5 ways as a sum of consecutive naturals, for example, 138865 + ... + 138964.

Almost surely, 2^13891450 is an apocalyptic number.

13891450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13891450 is a deficient number, since it is larger than the sum of its proper divisors (11946740).

13891450 is a wasteful number, since it uses less digits than its factorization.

13891450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277841 (or 277836 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 13891450 is about 3727.1235557733. The cubic root of 13891450 is about 240.3897025221.

It can be divided in two parts, 13891 and 450, that added together give a palindrome (14341).

The spelling of 13891450 in words is "thirteen million, eight hundred ninety-one thousand, four hundred fifty".