406293 has 4 divisors (see below), whose sum is σ = 541728. Its totient is φ = 270860.

The previous prime is 406271. The next prime is 406309. The reversal of 406293 is 392604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406293 - 2⁸ = 406037 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406253) 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, 67713 + ... + 67718.

It is an arithmetic number, because the mean of its divisors is an integer number (135432).

2⁴⁰⁶²⁹³ is an apocalyptic number.

It is an amenable number.

406293 is a deficient number, since it is larger than the sum of its proper divisors (135435).

406293 is a wasteful number, since it uses less digits than its factorization.

406293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135434.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 406293 is about 637.4111702818. The cubic root of 406293 is about 74.0650146915.

Adding to 406293 its reverse (392604), we get a palindrome (798897).

Subtracting from 406293 its reverse (392604), we obtain a square (13689 = 117²).

The spelling of 406293 in words is "four hundred six thousand, two hundred ninety-three".