406302385 has 4 divisors (see below), whose sum is σ = 487562868. Its totient is φ = 325041904.

The previous prime is 406302373. The next prime is 406302401. The reversal of 406302385 is 583203604.

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 321735969 + 84566416 = 17937^2 + 9196^2 .

It is a cyclic number.

It is not a de Polignac number, because 406302385 - 2⁹ = 406301873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40630234 + ... + 40630243.

It is an arithmetic number, because the mean of its divisors is an integer number (121890717).

Almost surely, 2^406302385 is an apocalyptic number.

It is an amenable number.

406302385 is a deficient number, since it is larger than the sum of its proper divisors (81260483).

406302385 is an equidigital number, since it uses as much as digits as its factorization.

406302385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81260482.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 406302385 is about 20156.9438407711. The cubic root of 406302385 is about 740.6558496529.

Adding to 406302385 its reverse (583203604), we get a palindrome (989505989).

The spelling of 406302385 in words is "four hundred six million, three hundred two thousand, three hundred eighty-five".