1405873 has 8 divisors (see below), whose sum is σ = 1622592. Its totient is φ = 1193136.

The previous prime is 1405841. The next prime is 1405879. The reversal of 1405873 is 3785041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1405873 - 2⁵ = 1405841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1405879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (202824).

2^1405873 is an apocalyptic number.

It is an amenable number.

1405873 is a deficient number, since it is larger than the sum of its proper divisors (216719).

1405873 is a wasteful number, since it uses less digits than its factorization.

1405873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1405873 is about 1185.6951547510. The cubic root of 1405873 is about 112.0251059790.

It can be divided in two parts, 1405 and 873, that added together give a triangular number (2278 = T₆₇).

The spelling of 1405873 in words is "one million, four hundred five thousand, eight hundred seventy-three".