999887652 has 48 divisors (see below), whose sum is σ = 2624328000. Its totient is φ = 333292968.

The previous prime is 999887633. The next prime is 999887653. The reversal of 999887652 is 256788999.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 999887652.

It is not an unprimeable number, because it can be changed into a prime (999887653) 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, 48402 + ... + 65897.

It is an arithmetic number, because the mean of its divisors is an integer number (54673500).

Almost surely, 2^999887652 is an apocalyptic number.

It is an amenable number.

999887652 is an abundant number, since it is smaller than the sum of its proper divisors (1624440348).

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

999887652 is a wasteful number, since it uses less digits than its factorization.

999887652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114324 (or 114304 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The square root of 999887652 is about 31621.0001739350. Note that the first 3 decimals coincide. The cubic root of 999887652 is about 999.9625492641.

The spelling of 999887652 in words is "nine hundred ninety-nine million, eight hundred eighty-seven thousand, six hundred fifty-two".