13900055 has 8 divisors (see below), whose sum is σ = 17963232. Its totient is φ = 10264608.

The previous prime is 13900043. The next prime is 13900063. The reversal of 13900055 is 55000931.

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 13900055 - 2⁸ = 13899799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13900055.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 106859 + ... + 106988.

It is an arithmetic number, because the mean of its divisors is an integer number (2245404).

Almost surely, 2^13900055 is an apocalyptic number.

13900055 is a deficient number, since it is larger than the sum of its proper divisors (4063177).

13900055 is a wasteful number, since it uses less digits than its factorization.

13900055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213865.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 13900055 is about 3728.2777525286. The cubic root of 13900055 is about 240.4393284051.

Adding to 13900055 its reverse (55000931), we get a palindrome (68900986).

The spelling of 13900055 in words is "thirteen million, nine hundred thousand, fifty-five".