1405773 has 12 divisors (see below), whose sum is σ = 2050620. Its totient is φ = 927936.

The previous prime is 1405769. The next prime is 1405787. The reversal of 1405773 is 3775041.

It can be written as a sum of positive squares in 2 ways, for example, as 1077444 + 328329 = 1038^2 + 573^2 .

It is not a de Polignac number, because 1405773 - 2² = 1405769 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

1405773 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (170885).

2^1405773 is an apocalyptic number.

It is an amenable number.

1405773 is a deficient number, since it is larger than the sum of its proper divisors (644847).

1405773 is a wasteful number, since it uses less digits than its factorization.

1405773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548 (or 1545 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 1405773 is about 1185.6529846460. The cubic root of 1405773 is about 112.0224497940.

The spelling of 1405773 in words is "one million, four hundred five thousand, seven hundred seventy-three".