409075 has 6 divisors (see below), whose sum is σ = 507284. Its totient is φ = 327240.

The previous prime is 409069. The next prime is 409081. The reversal of 409075 is 570904.

It is an interprime number because it is at equal distance from previous prime (409069) and next prime (409081).

It is not a de Polignac number, because 409075 - 2⁵ = 409043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 16363 = 409075 / (4 + 0 + 9 + 0 + 7 + 5).

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8157 + ... + 8206.

2⁴⁰⁹⁰⁷⁵ is an apocalyptic number.

409075 is a deficient number, since it is larger than the sum of its proper divisors (98209).

409075 is a wasteful number, since it uses less digits than its factorization.

409075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16373 (or 16368 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 409075 is about 639.5897122375. The cubic root of 409075 is about 74.2336781606.

Adding to 409075 its reverse (570904), we get a palindrome (979979).

The spelling of 409075 in words is "four hundred nine thousand, seventy-five".