13963009 has 8 divisors (see below), whose sum is σ = 14362920. Its totient is φ = 13568256.

The previous prime is 13962979. The next prime is 13963021. The reversal of 13963009 is 90036931.

It can be written as a sum of positive squares in 4 ways, for example, as 8832784 + 5130225 = 2972^2 + 2265^2 .

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 13963009 - 2⁹ = 13962497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13963049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4569 + ... + 6985.

It is an arithmetic number, because the mean of its divisors is an integer number (1795365).

Almost surely, 2^13963009 is an apocalyptic number.

It is an amenable number.

13963009 is a deficient number, since it is larger than the sum of its proper divisors (399911).

13963009 is a wasteful number, since it uses less digits than its factorization.

13963009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 13963009 is about 3736.7109869510. The cubic root of 13963009 is about 240.8017687773.

The spelling of 13963009 in words is "thirteen million, nine hundred sixty-three thousand, nine".