1000999970 has 16 divisors (see below), whose sum is σ = 1804041720. Its totient is φ = 399901824.

The previous prime is 1000999949. The next prime is 1001000027. The reversal of 1000999970 is 799990001.

It can be written as a sum of positive squares in 4 ways, for example, as 994834681 + 6165289 = 31541^2 + 2483^2 .

It is an unprimeable number.

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, 53777 + ... + 69956.

Almost surely, 2^1000999970 is an apocalyptic number.

1000999970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000999970 is a deficient number, since it is larger than the sum of its proper divisors (803041750).

1000999970 is a wasteful number, since it uses less digits than its factorization.

1000999970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124549.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 1000999970 is about 31638.5835650081. The cubic root of 1000999970 is about 1000.3332122906. Note that the first 3 decimals are identical.

The spelling of 1000999970 in words is "one billion, nine hundred ninety-nine thousand, nine hundred seventy".