2112989 has 2 divisors, whose sum is σ = 2112990. Its totient is φ = 2112988.

The previous prime is 2112973. The next prime is 2112997. The reversal of 2112989 is 9892112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2088025 + 24964 = 1445^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112989 - 2⁴ = 2112973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056494 + 1056495.

It is an arithmetic number, because the mean of its divisors is an integer number (1056495).

2^2112989 is an apocalyptic number.

It is an amenable number.

2112989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112989 is an equidigital number, since it uses as much as digits as its factorization.

2112989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 32.

The square root of 2112989 is about 1453.6123967551. The cubic root of 2112989 is about 128.3213969146.

The spelling of 2112989 in words is "two million, one hundred twelve thousand, nine hundred eighty-nine".