999906252 has 24 divisors (see below), whose sum is σ = 2333760576. Its totient is φ = 333209808.

The previous prime is 999906251. The next prime is 999906253. The reversal of 999906252 is 252609999.

It is an interprime number because it is at equal distance from previous prime (999906251) and next prime (999906253).

It is a junction number, because it is equal to n+sod(n) for n = 999906195 and 999906204.

It is not an unprimeable number, because it can be changed into a prime (999906251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44503 + ... + 63089.

It is an arithmetic number, because the mean of its divisors is an integer number (97240024).

Almost surely, 2^999906252 is an apocalyptic number.

It is an amenable number.

999906252 is an abundant number, since it is smaller than the sum of its proper divisors (1333854324).

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

999906252 is a wasteful number, since it uses less digits than its factorization.

999906252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23077 (or 23075 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 51.

The square root of 999906252 is about 31621.2942809114. The cubic root of 999906252 is about 999.9687496901.

The spelling of 999906252 in words is "nine hundred ninety-nine million, nine hundred six thousand, two hundred fifty-two".