14878813 has 2 divisors, whose sum is σ = 14878814. Its totient is φ = 14878812.

The previous prime is 14878807. The next prime is 14878841. The reversal of 14878813 is 31887841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12404484 + 2474329 = 3522^2 + 1573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14878813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14878873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7439406 + 7439407.

It is an arithmetic number, because the mean of its divisors is an integer number (7439407).

Almost surely, 2^14878813 is an apocalyptic number.

It is an amenable number.

14878813 is a deficient number, since it is larger than the sum of its proper divisors (1).

14878813 is an equidigital number, since it uses as much as digits as its factorization.

14878813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 40.

The square root of 14878813 is about 3857.3064436210. The cubic root of 14878813 is about 245.9552488715.

Subtracting 14878813 from its reverse (31887841), we obtain a triangular number (17009028 = T₅₈₃₂).

It can be divided in two parts, 148 and 78813, that added together give a square (78961 = 281²).

The spelling of 14878813 in words is "fourteen million, eight hundred seventy-eight thousand, eight hundred thirteen".