14887921 has 2 divisors, whose sum is σ = 14887922. Its totient is φ = 14887920.

The previous prime is 14887913. The next prime is 14887973. The reversal of 14887921 is 12978841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14861025 + 26896 = 3855^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 14887921 - 2³ = 14887913 is a prime.

It is not a weakly prime, because it can be changed into another prime (14887981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7443960 + 7443961.

It is an arithmetic number, because the mean of its divisors is an integer number (7443961).

Almost surely, 2^14887921 is an apocalyptic number.

It is an amenable number.

14887921 is a deficient number, since it is larger than the sum of its proper divisors (1).

14887921 is an equidigital number, since it uses as much as digits as its factorization.

14887921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 40.

The square root of 14887921 is about 3858.4868795941. The cubic root of 14887921 is about 246.0054254427.

It can be divided in two parts, 1488 and 7921, that added together give a square (9409 = 97²).

The spelling of 14887921 in words is "fourteen million, eight hundred eighty-seven thousand, nine hundred twenty-one".