12764399 has 8 divisors (see below), whose sum is σ = 13548240. Its totient is φ = 11984256.

The previous prime is 12764387. The next prime is 12764417. The reversal of 12764399 is 99346721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12764399 - 2¹⁶ = 12698863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12764359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9917 + ... + 11129.

It is an arithmetic number, because the mean of its divisors is an integer number (1693530).

Almost surely, 2^12764399 is an apocalyptic number.

12764399 is a deficient number, since it is larger than the sum of its proper divisors (783841).

12764399 is a wasteful number, since it uses less digits than its factorization.

12764399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849.

The product of its digits is 81648, while the sum is 41.

The square root of 12764399 is about 3572.7299086273. The cubic root of 12764399 is about 233.7043469423.

It can be divided in two parts, 12764 and 399, that multiplied together give a triangular number (5092836 = T₃₁₉₁).

The spelling of 12764399 in words is "twelve million, seven hundred sixty-four thousand, three hundred ninety-nine".