13988261 has 8 divisors (see below), whose sum is σ = 16080384. Its totient is φ = 11919600.

The previous prime is 13988243. The next prime is 13988279. The reversal of 13988261 is 16288931.

It is an interprime number because it is at equal distance from previous prime (13988243) and next prime (13988279).

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

It is a de Polignac number, because none of the positive numbers 2^k-13988261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13988231) 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 7 ways as a sum of consecutive naturals, for example, 4565 + ... + 6986.

It is an arithmetic number, because the mean of its divisors is an integer number (2010048).

Almost surely, 2^13988261 is an apocalyptic number.

It is an amenable number.

13988261 is a deficient number, since it is larger than the sum of its proper divisors (2092123).

13988261 is a wasteful number, since it uses less digits than its factorization.

13988261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11731.

The product of its digits is 20736, while the sum is 38.

The square root of 13988261 is about 3740.0883679400. The cubic root of 13988261 is about 240.9468441044.

The spelling of 13988261 in words is "thirteen million, nine hundred eighty-eight thousand, two hundred sixty-one".