12003997 has 2 divisors, whose sum is σ = 12003998. Its totient is φ = 12003996.

The previous prime is 12003977. The next prime is 12004033. The reversal of 12003997 is 79930021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11329956 + 674041 = 3366^2 + 821^2 .

It is an emirp because it is prime and its reverse (79930021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12003997 - 2⁷ = 12003869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12003977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001998 + 6001999.

It is an arithmetic number, because the mean of its divisors is an integer number (6001999).

Almost surely, 2^12003997 is an apocalyptic number.

It is an amenable number.

12003997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003997 is an equidigital number, since it uses as much as digits as its factorization.

12003997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 12003997 is about 3464.6784843619. The cubic root of 12003997 is about 228.9682647047.

The spelling of 12003997 in words is "twelve million, three thousand, nine hundred ninety-seven".