1340324989 has 2 divisors, whose sum is σ = 1340324990. Its totient is φ = 1340324988.

The previous prime is 1340324983. The next prime is 1340325011. The reversal of 1340324989 is 9894230431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1173062500 + 167262489 = 34250^2 + 12933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340324989 - 2⁵ = 1340324957 is a prime.

It is a super-2 number, since 2×1340324989² = 3592942152275700242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340324983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670162494 + 670162495.

It is an arithmetic number, because the mean of its divisors is an integer number (670162495).

Almost surely, 2^1340324989 is an apocalyptic number.

It is an amenable number.

1340324989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340324989 is an equidigital number, since it uses as much as digits as its factorization.

1340324989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 1340324989 is about 36610.4491777962. The cubic root of 1340324989 is about 1102.5628915709.

The spelling of 1340324989 in words is "one billion, three hundred forty million, three hundred twenty-four thousand, nine hundred eighty-nine".