12983895 has 20 divisors (see below), whose sum is σ = 23275560. Its totient is φ = 6924528.

The previous prime is 12983879. The next prime is 12983899. The reversal of 12983895 is 59838921.

It is a happy number.

It is not a de Polignac number, because 12983895 - 2⁴ = 12983879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12983895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12983899) 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 19 ways as a sum of consecutive naturals, for example, 15625 + ... + 16434.

It is an arithmetic number, because the mean of its divisors is an integer number (1163778).

Almost surely, 2^12983895 is an apocalyptic number.

12983895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12983895 is a deficient number, since it is larger than the sum of its proper divisors (10291665).

12983895 is an equidigital number, since it uses as much as digits as its factorization.

12983895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32076 (or 32067 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 12983895 is about 3603.3172216723. The cubic root of 12983895 is about 235.0363305835.

The spelling of 12983895 in words is "twelve million, nine hundred eighty-three thousand, eight hundred ninety-five".