1009906 has 4 divisors (see below), whose sum is σ = 1514862. Its totient is φ = 504952.

The previous prime is 1009901. The next prime is 1009909. The reversal of 1009906 is 6099001.

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

It can be written as a sum of positive squares in only one way, i.e., 990025 + 19881 = 995^2 + 141^2 .

It is not an unprimeable number, because it can be changed into a prime (1009901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252475 + ... + 252478.

2^1009906 is an apocalyptic number.

1009906 is a deficient number, since it is larger than the sum of its proper divisors (504956).

1009906 is an equidigital number, since it uses as much as digits as its factorization.

1009906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504955.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 1009906 is about 1004.9407942760. The cubic root of 1009906 is about 100.3291156407.

The spelling of 1009906 in words is "one million, nine thousand, nine hundred six".