999992245 has 12 divisors (see below), whose sum is σ = 1395907884. Its totient is φ = 685708800.

The previous prime is 999992221. The next prime is 999992263. The reversal of 999992245 is 542299999.

It can be written as a sum of positive squares in 2 ways, for example, as 632924964 + 367067281 = 25158^2 + 19159^2 .

It is not a de Polignac number, because 999992245 - 2¹⁷ = 999861173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999992245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2040556 + ... + 2041045.

It is an arithmetic number, because the mean of its divisors is an integer number (116325657).

Almost surely, 2^999992245 is an apocalyptic number.

It is an amenable number.

999992245 is a deficient number, since it is larger than the sum of its proper divisors (395915639).

999992245 is a wasteful number, since it uses less digits than its factorization.

999992245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081620 (or 4081613 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 58.

The square root of 999992245 is about 31622.6539841298. The cubic root of 999992245 is about 999.9974149933.

The spelling of 999992245 in words is "nine hundred ninety-nine million, nine hundred ninety-two thousand, two hundred forty-five".