1403993 has 8 divisors (see below), whose sum is σ = 1455168. Its totient is φ = 1353744.

The previous prime is 1403981. The next prime is 1404059. The reversal of 1403993 is 3993041.

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 1403993 - 2¹⁶ = 1338457 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 (1403903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4271 + ... + 4587.

It is an arithmetic number, because the mean of its divisors is an integer number (181896).

2^1403993 is an apocalyptic number.

It is an amenable number.

1403993 is a deficient number, since it is larger than the sum of its proper divisors (51175).

1403993 is a wasteful number, since it uses less digits than its factorization.

1403993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463.

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

The square root of 1403993 is about 1184.9021056611. The cubic root of 1403993 is about 111.9751486103.

The spelling of 1403993 in words is "one million, four hundred three thousand, nine hundred ninety-three".