13888885 has 8 divisors (see below), whose sum is σ = 16689240. Its totient is φ = 11096064.

The previous prime is 13888879. The next prime is 13888933. The reversal of 13888885 is 58888831.

It can be written as a sum of positive squares in 4 ways, for example, as 2979076 + 10909809 = 1726^2 + 3303^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13888885 - 2¹¹ = 13886837 is a prime.

It is a super-2 number, since 2×13888885² = 385802253086450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3669 + ... + 6421.

It is an arithmetic number, because the mean of its divisors is an integer number (2086155).

Almost surely, 2^13888885 is an apocalyptic number.

It is an amenable number.

13888885 is a deficient number, since it is larger than the sum of its proper divisors (2800355).

13888885 is a wasteful number, since it uses less digits than its factorization.

13888885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767.

The product of its digits is 491520, while the sum is 49.

The square root of 13888885 is about 3726.7794407504. The cubic root of 13888885 is about 240.3749059496.

The spelling of 13888885 in words is "thirteen million, eight hundred eighty-eight thousand, eight hundred eighty-five".