407285 has 4 divisors (see below), whose sum is σ = 488748. Its totient is φ = 325824.

The previous prime is 407273. The next prime is 407287. The reversal of 407285 is 582704.

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 103684 + 303601 = 322^2 + 551^2 .

It is a cyclic number.

It is not a de Polignac number, because 407285 - 2⁶ = 407221 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407287) 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, 40724 + ... + 40733.

It is an arithmetic number, because the mean of its divisors is an integer number (122187).

2⁴⁰⁷²⁸⁵ is an apocalyptic number.

It is an amenable number.

407285 is a deficient number, since it is larger than the sum of its proper divisors (81463).

407285 is an equidigital number, since it uses as much as digits as its factorization.

407285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81462.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 407285 is about 638.1888435252. The cubic root of 407285 is about 74.1252444428.

Adding to 407285 its reverse (582704), we get a palindrome (989989).

The spelling of 407285 in words is "four hundred seven thousand, two hundred eighty-five".