999999133 has 8 divisors (see below), whose sum is σ = 1143538560. Its totient is φ = 856630320.

The previous prime is 999999131. The next prime is 999999137. The reversal of 999999133 is 331999999.

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

It is not a de Polignac number, because 999999133 - 2¹ = 999999131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999999131) 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, 29833 + ... + 53758.

It is an arithmetic number, because the mean of its divisors is an integer number (142942320).

Almost surely, 2^999999133 is an apocalyptic number.

It is an amenable number.

999999133 is a deficient number, since it is larger than the sum of its proper divisors (143539427).

999999133 is a wasteful number, since it uses less digits than its factorization.

999999133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85307.

The product of its digits is 4782969, while the sum is 61.

The square root of 999999133 is about 31622.7628932072. The cubic root of 999999133 is about 999.9997109999. Note that the first 3 decimals are identical.

The spelling of 999999133 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred thirty-three".