13403898 has 12 divisors (see below), whose sum is σ = 29041818. Its totient is φ = 4467960.

The previous prime is 13403893. The next prime is 13403969. The reversal of 13403898 is 89830431.

It can be written as a sum of positive squares in only one way, i.e., 13198689 + 205209 = 3633^2 + 453^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13403893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 372313 + ... + 372348.

Almost surely, 2^13403898 is an apocalyptic number.

13403898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13403898 is an abundant number, since it is smaller than the sum of its proper divisors (15637920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13403898 is a wasteful number, since it uses less digits than its factorization.

13403898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744669 (or 744666 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 13403898 is about 3661.1334310566. The cubic root of 13403898 is about 237.5438028165.

The spelling of 13403898 in words is "thirteen million, four hundred three thousand, eight hundred ninety-eight".