990001006 has 16 divisors (see below), whose sum is σ = 1587364128. Its totient is φ = 461929600.

The previous prime is 990001003. The next prime is 990001037. The reversal of 990001006 is 600100099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990001003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260575 + ... + 264346.

It is an arithmetic number, because the mean of its divisors is an integer number (99210258).

Almost surely, 2^990001006 is an apocalyptic number.

990001006 is a deficient number, since it is larger than the sum of its proper divisors (597363122).

990001006 is a wasteful number, since it uses less digits than its factorization.

990001006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524987.

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

The square root of 990001006 is about 31464.2814314899. The cubic root of 990001006 is about 996.6558310002.

The spelling of 990001006 in words is "nine hundred ninety million, one thousand, six".