2167449989 has 2 divisors, whose sum is σ = 2167449990. Its totient is φ = 2167449988.

The previous prime is 2167449983. The next prime is 2167450031. The reversal of 2167449989 is 9899447612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1249056964 + 918393025 = 35342^2 + 30305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2167449989 is a prime.

It is a super-2 number, since 2×2167449989² = 9395678909632200242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2167449983) 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, 1083724994 + 1083724995.

It is an arithmetic number, because the mean of its divisors is an integer number (1083724995).

Almost surely, 2^2167449989 is an apocalyptic number.

It is an amenable number.

2167449989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167449989 is an equidigital number, since it uses as much as digits as its factorization.

2167449989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 59.

The square root of 2167449989 is about 46555.8802838052. The cubic root of 2167449989 is about 1294.1452674366.

The spelling of 2167449989 in words is "two billion, one hundred sixty-seven million, four hundred forty-nine thousand, nine hundred eighty-nine".