999488447 has 8 divisors (see below), whose sum is σ = 1024900800. Its totient is φ = 974125440.

The previous prime is 999488443. The next prime is 999488449. The reversal of 999488447 is 744884999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999488447 - 2² = 999488443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999488447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999488443) 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, 30554 + ... + 54152.

It is an arithmetic number, because the mean of its divisors is an integer number (128112600).

Almost surely, 2^999488447 is an apocalyptic number.

999488447 is a deficient number, since it is larger than the sum of its proper divisors (25412353).

999488447 is a wasteful number, since it uses less digits than its factorization.

999488447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24673.

The product of its digits is 20901888, while the sum is 62.

The square root of 999488447 is about 31614.6872038931. The cubic root of 999488447 is about 999.8294532488.

The spelling of 999488447 in words is "nine hundred ninety-nine million, four hundred eighty-eight thousand, four hundred forty-seven".