13898445 has 32 divisors (see below), whose sum is σ = 24482304. Its totient is φ = 6676800.

The previous prime is 13898429. The next prime is 13898449. The reversal of 13898445 is 54489831.

It is not a de Polignac number, because 13898445 - 2⁴ = 13898429 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13898397 and 13898406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13898449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21294 + ... + 21936.

It is an arithmetic number, because the mean of its divisors is an integer number (765072).

Almost surely, 2^13898445 is an apocalyptic number.

13898445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13898445 is a deficient number, since it is larger than the sum of its proper divisors (10583859).

13898445 is a wasteful number, since it uses less digits than its factorization.

13898445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its digits is 138240, while the sum is 42.

The square root of 13898445 is about 3728.0618288864. The cubic root of 13898445 is about 240.4300449343.

The spelling of 13898445 in words is "thirteen million, eight hundred ninety-eight thousand, four hundred forty-five".