14981391 has 24 divisors (see below), whose sum is σ = 22374144. Its totient is φ = 9654480.

The previous prime is 14981389. The next prime is 14981413. The reversal of 14981391 is 19318941.

14981391 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 14981391 - 2¹ = 14981389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14981311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45096 + ... + 45426.

It is an arithmetic number, because the mean of its divisors is an integer number (932256).

Almost surely, 2^14981391 is an apocalyptic number.

14981391 is a deficient number, since it is larger than the sum of its proper divisors (7392753).

14981391 is a wasteful number, since it uses less digits than its factorization.

14981391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 488 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 14981391 is about 3870.5801890673. The cubic root of 14981391 is about 246.5191791393.

The spelling of 14981391 in words is "fourteen million, nine hundred eighty-one thousand, three hundred ninety-one".