14921887 has 2 divisors, whose sum is σ = 14921888. Its totient is φ = 14921886.

The previous prime is 14921873. The next prime is 14921891. The reversal of 14921887 is 78812941.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14921887 is a prime.

It is a super-3 number, since 3×14921887³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14921807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7460943 + 7460944.

It is an arithmetic number, because the mean of its divisors is an integer number (7460944).

Almost surely, 2^14921887 is an apocalyptic number.

14921887 is a deficient number, since it is larger than the sum of its proper divisors (1).

14921887 is an equidigital number, since it uses as much as digits as its factorization.

14921887 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 14921887 is about 3862.8858383338. The cubic root of 14921887 is about 246.1923661147.

The spelling of 14921887 in words is "fourteen million, nine hundred twenty-one thousand, eight hundred eighty-seven".