1009420849 has 8 divisors (see below), whose sum is σ = 1115268480. Its totient is φ = 908736576.

The previous prime is 1009420837. The next prime is 1009420871. The reversal of 1009420849 is 9480249001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1009420849 - 2⁵ = 1009420817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1009420889) 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 in 7 ways as a sum of consecutive naturals, for example, 1290429 + ... + 1291210.

It is an arithmetic number, because the mean of its divisors is an integer number (139408560).

Almost surely, 2^1009420849 is an apocalyptic number.

It is an amenable number.

1009420849 is a deficient number, since it is larger than the sum of its proper divisors (105847631).

1009420849 is a wasteful number, since it uses less digits than its factorization.

1009420849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581679.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1009420849 is about 31771.3841215645. The cubic root of 1009420849 is about 1003.1304729133.

The spelling of 1009420849 in words is "one billion, nine million, four hundred twenty thousand, eight hundred forty-nine".