403799 has 4 divisors (see below), whose sum is σ = 440520. Its totient is φ = 367080.

The previous prime is 403787. The next prime is 403817. The reversal of 403799 is 997304.

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 403799 - 2⁴ = 403783 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 (403729) 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, 18344 + ... + 18365.

It is an arithmetic number, because the mean of its divisors is an integer number (110130).

2⁴⁰³⁷⁹⁹ is an apocalyptic number.

403799 is a deficient number, since it is larger than the sum of its proper divisors (36721).

403799 is a wasteful number, since it uses less digits than its factorization.

403799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36720.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 403799 is about 635.4518077714. The cubic root of 403799 is about 73.9131559750.

Subtracting 403799 from its reverse (997304), we obtain a triangular number (593505 = T₁₀₈₉).

The spelling of 403799 in words is "four hundred three thousand, seven hundred ninety-nine".