14640869 has 2 divisors, whose sum is σ = 14640870. Its totient is φ = 14640868.

The previous prime is 14640851. The next prime is 14640877. The reversal of 14640869 is 96804641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10176100 + 4464769 = 3190^2 + 2113^2 .

It is an emirp because it is prime and its reverse (96804641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14640869 - 2¹⁶ = 14575333 is a prime.

It is a super-2 number, since 2×14640869² = 428710090150322, 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 (14642869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7320434 + 7320435.

It is an arithmetic number, because the mean of its divisors is an integer number (7320435).

Almost surely, 2^14640869 is an apocalyptic number.

It is an amenable number.

14640869 is a deficient number, since it is larger than the sum of its proper divisors (1).

14640869 is an equidigital number, since it uses as much as digits as its factorization.

14640869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 14640869 is about 3826.3388506508. The cubic root of 14640869 is about 244.6370803301.

The spelling of 14640869 in words is "fourteen million, six hundred forty thousand, eight hundred sixty-nine".