990000990002 has 4 divisors (see below), whose sum is σ = 1485001485006. Its totient is φ = 495000495000.

The previous prime is 990000989953. The next prime is 990000990037. The reversal of 990000990002 is 200099000099.

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., 986642903401 + 3358086601 = 993299^2 + 57949^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247500247499 + ... + 247500247502.

Almost surely, 2^990000990002 is an apocalyptic number.

990000990002 is a deficient number, since it is larger than the sum of its proper divisors (495000495004).

990000990002 is a wasteful number, since it uses less digits than its factorization.

990000990002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495000495003.

The product of its (nonzero) digits is 13122, while the sum is 38.

The spelling of 990000990002 in words is "nine hundred ninety billion, nine hundred ninety thousand, two".