1043399 has 4 divisors (see below), whose sum is σ = 1192464. Its totient is φ = 894336.

The previous prime is 1043377. The next prime is 1043401. The reversal of 1043399 is 9933401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9933401 = 23 ⋅431887.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1043399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043369) 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, 74522 + ... + 74535.

It is an arithmetic number, because the mean of its divisors is an integer number (298116).

2^1043399 is an apocalyptic number.

1043399 is a deficient number, since it is larger than the sum of its proper divisors (149065).

1043399 is an equidigital number, since it uses as much as digits as its factorization.

1043399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149064.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 1043399 is about 1021.4690401574. The cubic root of 1043399 is about 101.4261962773.

The spelling of 1043399 in words is "one million, forty-three thousand, three hundred ninety-nine".