973405 has 4 divisors (see below), whose sum is σ = 1168092. Its totient is φ = 778720.

The previous prime is 973397. The next prime is 973409. The reversal of 973405 is 504379.

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

It can be written as a sum of positive squares in 2 ways, for example, as 161604 + 811801 = 402^2 + 901^2 .

It is not a de Polignac number, because 973405 - 2³ = 973397 is a prime.

It is a Duffinian number.

973405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973409) 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, 97336 + ... + 97345.

It is an arithmetic number, because the mean of its divisors is an integer number (292023).

2⁹⁷³⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

973405 is a deficient number, since it is larger than the sum of its proper divisors (194687).

973405 is a wasteful number, since it uses less digits than its factorization.

973405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194686.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 973405 is about 986.6128926788. The cubic root of 973405 is about 99.1055229637.

It can be divided in two parts, 973 and 405, that added together give a triangular number (1378 = T₅₂).

The spelling of 973405 in words is "nine hundred seventy-three thousand, four hundred five".