999970002 has 32 divisors (see below), whose sum is σ = 2247134400. Its totient is φ = 329576544.

The previous prime is 999969991. The next prime is 999970003. The reversal of 999970002 is 200079999.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 999970002.

It is not an unprimeable number, because it can be changed into a prime (999970003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99228 + ... + 108839.

It is an arithmetic number, because the mean of its divisors is an integer number (70222950).

Almost surely, 2^999970002 is an apocalyptic number.

999970002 is an abundant number, since it is smaller than the sum of its proper divisors (1247164398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999970002 is a wasteful number, since it uses less digits than its factorization.

999970002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208167 (or 208161 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The square root of 999970002 is about 31622.3022881004. The cubic root of 999970002 is about 999.9900005667.

The spelling of 999970002 in words is "nine hundred ninety-nine million, nine hundred seventy thousand, two".