1405933 has 4 divisors (see below), whose sum is σ = 1421820. Its totient is φ = 1390048.

The previous prime is 1405927. The next prime is 1405939. The reversal of 1405933 is 3395041.

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 (1405927) and next prime (1405939).

It can be written as a sum of positive squares in 2 ways, for example, as 636804 + 769129 = 798^2 + 877^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405933 - 2⁹ = 1405421 is a prime.

It is a Duffinian number.

1405933 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1405898 and 1405907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405939) 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, 7810 + ... + 7987.

It is an arithmetic number, because the mean of its divisors is an integer number (355455).

2^1405933 is an apocalyptic number.

It is an amenable number.

1405933 is a deficient number, since it is larger than the sum of its proper divisors (15887).

1405933 is an equidigital number, since it uses as much as digits as its factorization.

1405933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15886.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1405933 is about 1185.7204560941. The cubic root of 1405933 is about 112.0266996295.

The spelling of 1405933 in words is "one million, four hundred five thousand, nine hundred thirty-three".