12019729 has 2 divisors, whose sum is σ = 12019730. Its totient is φ = 12019728.

The previous prime is 12019703. The next prime is 12019753. The reversal of 12019729 is 92791021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 5992704 = 2455^2 + 2448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12019729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12019729.

It is not a weakly prime, because it can be changed into another prime (12019759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6009864 + 6009865.

It is an arithmetic number, because the mean of its divisors is an integer number (6009865).

Almost surely, 2^12019729 is an apocalyptic number.

It is an amenable number.

12019729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12019729 is an equidigital number, since it uses as much as digits as its factorization.

12019729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 12019729 is about 3466.9480815265. The cubic root of 12019729 is about 229.0682468545.

The spelling of 12019729 in words is "twelve million, nineteen thousand, seven hundred twenty-nine".