1344806989 has 2 divisors, whose sum is σ = 1344806990. Its totient is φ = 1344806988.

The previous prime is 1344806977. The next prime is 1344806993. The reversal of 1344806989 is 9896084431.

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., 946485225 + 398321764 = 30765^2 + 19958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344806989 - 2²⁵ = 1311252557 is a prime.

It is a super-2 number, since 2×1344806989² = 3617011675326492242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1344806189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672403494 + 672403495.

It is an arithmetic number, because the mean of its divisors is an integer number (672403495).

Almost surely, 2^1344806989 is an apocalyptic number.

It is an amenable number.

1344806989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344806989 is an equidigital number, since it uses as much as digits as its factorization.

1344806989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 1344806989 is about 36671.6101228184. The cubic root of 1344806989 is about 1103.7905015050.

The spelling of 1344806989 in words is "one billion, three hundred forty-four million, eight hundred six thousand, nine hundred eighty-nine".