999774252 has 60 divisors (see below), whose sum is σ = 2674426216. Its totient is φ = 325503360.

The previous prime is 999774241. The next prime is 999774253. The reversal of 999774252 is 252477999.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (999774253) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21949 + ... + 49812.

Almost surely, 2^999774252 is an apocalyptic number.

It is an amenable number.

999774252 is an abundant number, since it is smaller than the sum of its proper divisors (1674651964).

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

999774252 is a wasteful number, since it uses less digits than its factorization.

999774252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71820 (or 71809 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 999774252 is about 31619.2070109293. The cubic root of 999774252 is about 999.9247450035.

The spelling of 999774252 in words is "nine hundred ninety-nine million, seven hundred seventy-four thousand, two hundred fifty-two".