1009894 has 4 divisors (see below), whose sum is σ = 1514844. Its totient is φ = 504946.

The previous prime is 1009873. The next prime is 1009901. The reversal of 1009894 is 4989001.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252472 + ... + 252475.

It is an arithmetic number, because the mean of its divisors is an integer number (378711).

2^1009894 is an apocalyptic number.

1009894 is a deficient number, since it is larger than the sum of its proper divisors (504950).

1009894 is an equidigital number, since it uses as much as digits as its factorization.

1009894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504949.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1009894 is about 1004.9348237572. The cubic root of 1009894 is about 100.3287182591.

The spelling of 1009894 in words is "one million, nine thousand, eight hundred ninety-four".