2143294969 has 2 divisors, whose sum is σ = 2143294970. Its totient is φ = 2143294968.

The previous prime is 2143294949. The next prime is 2143294999. The reversal of 2143294969 is 9694923412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2098739344 + 44555625 = 45812^2 + 6675^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143294969 - 2⁹ = 2143294457 is a prime.

It is a super-2 number, since 2×2143294969² = 9187426648281421922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (2143294919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071647484 + 1071647485.

It is an arithmetic number, because the mean of its divisors is an integer number (1071647485).

Almost surely, 2^2143294969 is an apocalyptic number.

It is an amenable number.

2143294969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143294969 is an equidigital number, since it uses as much as digits as its factorization.

2143294969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 2143294969 is about 46295.7338099311. The cubic root of 2143294969 is about 1289.3197882162.

The spelling of 2143294969 in words is "two billion, one hundred forty-three million, two hundred ninety-four thousand, nine hundred sixty-nine".