999997252 has 6 divisors (see below), whose sum is σ = 1749995198. Its totient is φ = 499998624.

The previous prime is 999997249. The next prime is 999997267. The reversal of 999997252 is 252799999.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 986336836 + 13660416 = 31406^2 + 3696^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124999653 + ... + 124999660.

Almost surely, 2^999997252 is an apocalyptic number.

It is an amenable number.

999997252 is a deficient number, since it is larger than the sum of its proper divisors (749997946).

999997252 is a wasteful number, since it uses less digits than its factorization.

999997252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249999317 (or 249999315 counting only the distinct ones).

The product of its digits is 8266860, while the sum is 61.

The square root of 999997252 is about 31622.7331519589. The cubic root of 999997252 is about 999.9990839992. Note that the first 3 decimals are identical.

The spelling of 999997252 in words is "nine hundred ninety-nine million, nine hundred ninety-seven thousand, two hundred fifty-two".