1499423609 has 2 divisors, whose sum is σ = 1499423610. Its totient is φ = 1499423608.

The previous prime is 1499423599. The next prime is 1499423623. The reversal of 1499423609 is 9063249941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1443772009 + 55651600 = 37997^2 + 7460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1499423609 is a prime.

It is a super-3 number, since 3×1499423609³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1499423309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 749711804 + 749711805.

It is an arithmetic number, because the mean of its divisors is an integer number (749711805).

Almost surely, 2^1499423609 is an apocalyptic number.

It is an amenable number.

1499423609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1499423609 is an equidigital number, since it uses as much as digits as its factorization.

1499423609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 1499423609 is about 38722.3915712860. The cubic root of 1499423609 is about 1144.5676008829.

The spelling of 1499423609 in words is "one billion, four hundred ninety-nine million, four hundred twenty-three thousand, six hundred nine".