408492485 has 8 divisors (see below), whose sum is σ = 490636536. Its totient is φ = 326496960.

The previous prime is 408492481. The next prime is 408492503. The reversal of 408492485 is 584294804.

It can be written as a sum of positive squares in 4 ways, for example, as 20638849 + 387853636 = 4543^2 + 19694^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 408492485 - 2² = 408492481 is a prime.

It is a super-2 number, since 2×408492485² = 333732220602950450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408492481) 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 7 ways as a sum of consecutive naturals, for example, 30986 + ... + 42155.

It is an arithmetic number, because the mean of its divisors is an integer number (61329567).

Almost surely, 2^408492485 is an apocalyptic number.

It is an amenable number.

408492485 is a deficient number, since it is larger than the sum of its proper divisors (82144051).

408492485 is a wasteful number, since it uses less digits than its factorization.

408492485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74263.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 408492485 is about 20211.1970204637. The cubic root of 408492485 is about 741.9842564160.

It can be divided in two parts, 40849 and 2485, that added together give a palindrome (43334).

The spelling of 408492485 in words is "four hundred eight million, four hundred ninety-two thousand, four hundred eighty-five".