408490 has 8 divisors (see below), whose sum is σ = 735300. Its totient is φ = 163392.

The previous prime is 408479. The next prime is 408491. The reversal of 408490 is 94804.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 169 = 639^2 + 13^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 408490.

It is not an unprimeable number, because it can be changed into a prime (408491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20415 + ... + 20434.

2⁴⁰⁸⁴⁹⁰ is an apocalyptic number.

408490 is a deficient number, since it is larger than the sum of its proper divisors (326810).

408490 is a wasteful number, since it uses less digits than its factorization.

408490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40856.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 408490 is about 639.1322241915. The cubic root of 408490 is about 74.1982751831.

It can be divided in two parts, 408 and 490, that added together give a palindrome (898).

The spelling of 408490 in words is "four hundred eight thousand, four hundred ninety".