1045999 has 4 divisors (see below), whose sum is σ = 1051960. Its totient is φ = 1040040.

The previous prime is 1045997. The next prime is 1046029. The reversal of 1045999 is 9995401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1045999 - 2¹ = 1045997 is a prime.

It is a super-3 number, since 3×1045999³ = 3433326160965413997, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

1045999 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2709 + ... + 3070.

It is an arithmetic number, because the mean of its divisors is an integer number (262990).

2^1045999 is an apocalyptic number.

1045999 is a deficient number, since it is larger than the sum of its proper divisors (5961).

1045999 is an equidigital number, since it uses as much as digits as its factorization.

1045999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 1045999 is about 1022.7409251614. The cubic root of 1045999 is about 101.5103728873.

The spelling of 1045999 in words is "one million, forty-five thousand, nine hundred ninety-nine".