1294609489 has 2 divisors, whose sum is σ = 1294609490. Its totient is φ = 1294609488.

The previous prime is 1294609439. The next prime is 1294609499. The reversal of 1294609489 is 9849064921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1070598400 + 224011089 = 32720^2 + 14967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1294609489 - 2²¹ = 1292512337 is a prime.

It is a super-2 number, since 2×1294609489² = 3352027458017682242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1294609439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647304744 + 647304745.

It is an arithmetic number, because the mean of its divisors is an integer number (647304745).

Almost surely, 2^1294609489 is an apocalyptic number.

It is an amenable number.

1294609489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1294609489 is an equidigital number, since it uses as much as digits as its factorization.

1294609489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 1294609489 is about 35980.6821641836. The cubic root of 1294609489 is about 1089.8822892835.

The spelling of 1294609489 in words is "one billion, two hundred ninety-four million, six hundred nine thousand, four hundred eighty-nine".