13896987 has 8 divisors (see below), whose sum is σ = 19954704. Its totient is φ = 8551968.

The previous prime is 13896979. The next prime is 13896989. The reversal of 13896987 is 78969831.

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

It is not a de Polignac number, because 13896987 - 2³ = 13896979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13896989) 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 7 ways as a sum of consecutive naturals, for example, 178128 + ... + 178205.

It is an arithmetic number, because the mean of its divisors is an integer number (2494338).

Almost surely, 2^13896987 is an apocalyptic number.

13896987 is a deficient number, since it is larger than the sum of its proper divisors (6057717).

13896987 is a wasteful number, since it uses less digits than its factorization.

13896987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356349.

The product of its digits is 653184, while the sum is 51.

The square root of 13896987 is about 3727.8662797906. The cubic root of 13896987 is about 240.4216372967.

The spelling of 13896987 in words is "thirteen million, eight hundred ninety-six thousand, nine hundred eighty-seven".