999428933 has 8 divisors (see below), whose sum is σ = 1035323136. Its totient is φ = 963763200.

The previous prime is 999428923. The next prime is 999428951. The reversal of 999428933 is 339824999.

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 999428933 - 2¹⁴ = 999412549 is a prime.

It is a super-3 number, since 3×999428933³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999428923) 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, 48188 + ... + 65733.

It is an arithmetic number, because the mean of its divisors is an integer number (129415392).

Almost surely, 2^999428933 is an apocalyptic number.

It is an amenable number.

999428933 is a deficient number, since it is larger than the sum of its proper divisors (35894203).

999428933 is a wasteful number, since it uses less digits than its factorization.

999428933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114235.

The product of its digits is 3779136, while the sum is 56.

The square root of 999428933 is about 31613.7459501401. The cubic root of 999428933 is about 999.8096080866.

The spelling of 999428933 in words is "nine hundred ninety-nine million, four hundred twenty-eight thousand, nine hundred thirty-three".