1073999 has 4 divisors (see below), whose sum is σ = 1103064. Its totient is φ = 1044936.

The previous prime is 1073983. The next prime is 1074001. The reversal of 1073999 is 9993701.

1073999 = 38² + 39² + ... + 148².

It is a happy number.

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 1073999 - 2⁴ = 1073983 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 (1073909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14477 + ... + 14550.

It is an arithmetic number, because the mean of its divisors is an integer number (275766).

2^1073999 is an apocalyptic number.

1073999 is a deficient number, since it is larger than the sum of its proper divisors (29065).

1073999 is an equidigital number, since it uses as much as digits as its factorization.

1073999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29064.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 1073999 is about 1036.3392301751. The cubic root of 1073999 is about 102.4081747522.

The spelling of 1073999 in words is "one million, seventy-three thousand, nine hundred ninety-nine".