999546849 has 24 divisors (see below), whose sum is σ = 1655065152. Its totient is φ = 569432160.

The previous prime is 999546833. The next prime is 999546881. The reversal of 999546849 is 948645999.

999546849 is a `hidden beast` number, since 9 + 9 + 9 + 546 + 84 + 9 = 666.

It is not a de Polignac number, because 999546849 - 2⁴ = 999546833 is a prime.

It is a super-3 number, since 3×999546849³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (999546829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3114 + ... + 44819.

It is an arithmetic number, because the mean of its divisors is an integer number (68961048).

Almost surely, 2^999546849 is an apocalyptic number.

It is an amenable number.

999546849 is a deficient number, since it is larger than the sum of its proper divisors (655518303).

999546849 is a wasteful number, since it uses less digits than its factorization.

999546849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48277 (or 48274 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The square root of 999546849 is about 31615.6108433793. The cubic root of 999546849 is about 999.8489268447.

The spelling of 999546849 in words is "nine hundred ninety-nine million, five hundred forty-six thousand, eight hundred forty-nine".