990203002 has 4 divisors (see below), whose sum is σ = 1485304506. Its totient is φ = 495101500.

The previous prime is 990202981. The next prime is 990203009. The reversal of 990203002 is 200302099.

990203002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 714011841 + 276191161 = 26721^2 + 16619^2 .

It is not an unprimeable number, because it can be changed into a prime (990203009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247550749 + ... + 247550752.

Almost surely, 2^990203002 is an apocalyptic number.

990203002 is a deficient number, since it is larger than the sum of its proper divisors (495101504).

990203002 is a wasteful number, since it uses less digits than its factorization.

990203002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495101503.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 990203002 is about 31467.4911932934. The cubic root of 990203002 is about 996.7236109988.

The spelling of 990203002 in words is "nine hundred ninety million, two hundred three thousand, two".