1214343989 has 2 divisors, whose sum is σ = 1214343990. Its totient is φ = 1214343988.

The previous prime is 1214343967. The next prime is 1214344063. The reversal of 1214343989 is 9893434121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 838565764 + 375778225 = 28958^2 + 19385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214343989 - 2⁸ = 1214343733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1214343919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607171994 + 607171995.

It is an arithmetic number, because the mean of its divisors is an integer number (607171995).

Almost surely, 2^1214343989 is an apocalyptic number.

It is an amenable number.

1214343989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214343989 is an equidigital number, since it uses as much as digits as its factorization.

1214343989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 1214343989 is about 34847.4387724550. The cubic root of 1214343989 is about 1066.8759105892.

The spelling of 1214343989 in words is "one billion, two hundred fourteen million, three hundred forty-three thousand, nine hundred eighty-nine".