4012002989 has 2 divisors, whose sum is σ = 4012002990. Its totient is φ = 4012002988.

The previous prime is 4012002983. The next prime is 4012003027. The reversal of 4012002989 is 9892002104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3298204900 + 713798089 = 57430^2 + 26717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4012002989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4012002983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2006001494 + 2006001495.

It is an arithmetic number, because the mean of its divisors is an integer number (2006001495).

Almost surely, 2^4012002989 is an apocalyptic number.

It is an amenable number.

4012002989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4012002989 is an equidigital number, since it uses as much as digits as its factorization.

4012002989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 4012002989 is about 63340.3740832023. The cubic root of 4012002989 is about 1588.9872628657.

The spelling of 4012002989 in words is "four billion, twelve million, two thousand, nine hundred eighty-nine".