12509963 has 2 divisors, whose sum is σ = 12509964. Its totient is φ = 12509962.

The previous prime is 12509951. The next prime is 12509971. The reversal of 12509963 is 36990521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12509963 is a prime.

It is a super-2 number, since 2×12509963² = 312998348522738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12509983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6254981 + 6254982.

It is an arithmetic number, because the mean of its divisors is an integer number (6254982).

Almost surely, 2^12509963 is an apocalyptic number.

12509963 is a deficient number, since it is larger than the sum of its proper divisors (1).

12509963 is an equidigital number, since it uses as much as digits as its factorization.

12509963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 12509963 is about 3536.9426062632. The cubic root of 12509963 is about 232.1410841724.

The spelling of 12509963 in words is "twelve million, five hundred nine thousand, nine hundred sixty-three".