1009494485 has 4 divisors (see below), whose sum is σ = 1211393388. Its totient is φ = 807595584.

The previous prime is 1009494481. The next prime is 1009494503. The reversal of 1009494485 is 5844949001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 776291044 + 233203441 = 27862^2 + 15271^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009494485 - 2² = 1009494481 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009494481) 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 in 3 ways as a sum of consecutive naturals, for example, 100949444 + ... + 100949453.

It is an arithmetic number, because the mean of its divisors is an integer number (302848347).

Almost surely, 2^1009494485 is an apocalyptic number.

It is an amenable number.

1009494485 is a deficient number, since it is larger than the sum of its proper divisors (201898903).

1009494485 is an equidigital number, since it uses as much as digits as its factorization.

1009494485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201898902.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1009494485 is about 31772.5429419806. The cubic root of 1009494485 is about 1003.1548646951.

The spelling of 1009494485 in words is "one billion, nine million, four hundred ninety-four thousand, four hundred eighty-five".