14987381 has 2 divisors, whose sum is σ = 14987382. Its totient is φ = 14987380.

The previous prime is 14987351. The next prime is 14987417. The reversal of 14987381 is 18378941.

14987381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11122225 + 3865156 = 3335^2 + 1966^2 .

It is a cyclic number.

It is not a de Polignac number, because 14987381 - 2²² = 10793077 is a prime.

It is a super-2 number, since 2×14987381² = 449243178478322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14987311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7493690 + 7493691.

It is an arithmetic number, because the mean of its divisors is an integer number (7493691).

Almost surely, 2^14987381 is an apocalyptic number.

It is an amenable number.

14987381 is a deficient number, since it is larger than the sum of its proper divisors (1).

14987381 is an equidigital number, since it uses as much as digits as its factorization.

14987381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 41.

The square root of 14987381 is about 3871.3538975402. The cubic root of 14987381 is about 246.5520299635.

The spelling of 14987381 in words is "fourteen million, nine hundred eighty-seven thousand, three hundred eighty-one".