999939202 has 8 divisors (see below), whose sum is σ = 1500417612. Its totient is φ = 499800000.

The previous prime is 999939137. The next prime is 999939203. The reversal of 999939202 is 202939999.

It can be written as a sum of positive squares in 2 ways, for example, as 998496801 + 1442401 = 31599^2 + 1201^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 999939202.

It is not an unprimeable number, because it can be changed into a prime (999939203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77299 + ... + 89302.

Almost surely, 2^999939202 is an apocalyptic number.

999939202 is a deficient number, since it is larger than the sum of its proper divisors (500478410).

999939202 is a wasteful number, since it uses less digits than its factorization.

999939202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169604.

The product of its (nonzero) digits is 708588, while the sum is 52.

The square root of 999939202 is about 31621.8152862861. The cubic root of 999939202 is about 999.9797335893.

The spelling of 999939202 in words is "nine hundred ninety-nine million, nine hundred thirty-nine thousand, two hundred two".