1354349989 has 2 divisors, whose sum is σ = 1354349990. Its totient is φ = 1354349988.

The previous prime is 1354349959. The next prime is 1354350043. The reversal of 1354349989 is 9899434531.

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., 780364225 + 573985764 = 27935^2 + 23958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1354349989 - 2²³ = 1345961381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1354349939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677174994 + 677174995.

It is an arithmetic number, because the mean of its divisors is an integer number (677174995).

Almost surely, 2^1354349989 is an apocalyptic number.

It is an amenable number.

1354349989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354349989 is an equidigital number, since it uses as much as digits as its factorization.

1354349989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 55.

The square root of 1354349989 is about 36801.4943854186. The cubic root of 1354349989 is about 1106.3952506821.

The spelling of 1354349989 in words is "one billion, three hundred fifty-four million, three hundred forty-nine thousand, nine hundred eighty-nine".