1403859 has 4 divisors (see below), whose sum is σ = 1871816. Its totient is φ = 935904.

The previous prime is 1403849. The next prime is 1403869. The reversal of 1403859 is 9583041.

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

It is an interprime number because it is at equal distance from previous prime (1403849) and next prime (1403869).

It is not a de Polignac number, because 1403859 - 2⁵ = 1403827 is a prime.

It is a D-number.

It is a Duffinian number.

1403859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1403819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233974 + ... + 233979.

It is an arithmetic number, because the mean of its divisors is an integer number (467954).

2^1403859 is an apocalyptic number.

1403859 is a deficient number, since it is larger than the sum of its proper divisors (467957).

1403859 is an equidigital number, since it uses as much as digits as its factorization.

1403859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467956.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1403859 is about 1184.8455595562. The cubic root of 1403859 is about 111.9715861170.

The spelling of 1403859 in words is "one million, four hundred three thousand, eight hundred fifty-nine".