999632249 has 32 divisors (see below), whose sum is σ = 1332847872. Its totient is φ = 725760000.

The previous prime is 999632243. The next prime is 999632273. The reversal of 999632249 is 942236999.

It is not a de Polignac number, because 999632249 - 2²⁴ = 982855033 is a prime.

999632249 is a modest number, since divided by 32249 gives 9996 as remainder.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 999632249.

It is not an unprimeable number, because it can be changed into a prime (999632243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128429 + ... + 135989.

It is an arithmetic number, because the mean of its divisors is an integer number (41651496).

Almost surely, 2^999632249 is an apocalyptic number.

It is an amenable number.

999632249 is a deficient number, since it is larger than the sum of its proper divisors (333215623).

999632249 is a wasteful number, since it uses less digits than its factorization.

999632249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7697.

The product of its digits is 1889568, while the sum is 53.

The square root of 999632249 is about 31616.9614131403. The cubic root of 999632249 is about 999.8774013035.

The spelling of 999632249 in words is "nine hundred ninety-nine million, six hundred thirty-two thousand, two hundred forty-nine".