1009894906 has 8 divisors (see below), whose sum is σ = 1515717684. Its totient is φ = 504655680.

The previous prime is 1009894901. The next prime is 1009894933. The reversal of 1009894906 is 6094989001.

It can be written as a sum of positive squares in 2 ways, for example, as 922640625 + 87254281 = 30375^2 + 9341^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1009894901) 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, 141535 + ... + 148498.

Almost surely, 2^1009894906 is an apocalyptic number.

1009894906 is a deficient number, since it is larger than the sum of its proper divisors (505822778).

1009894906 is a wasteful number, since it uses less digits than its factorization.

1009894906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291776.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 1009894906 is about 31778.8436856976. The cubic root of 1009894906 is about 1003.2874826149.

The spelling of 1009894906 in words is "one billion, nine million, eight hundred ninety-four thousand, nine hundred six".