404135090 has 16 divisors (see below), whose sum is σ = 747104472. Its totient is φ = 157284864.

The previous prime is 404135071. The next prime is 404135099. The reversal of 404135090 is 90531404.

It can be written as a sum of positive squares in 4 ways, for example, as 403326889 + 808201 = 20083^2 + 899^2 .

It is not an unprimeable number, because it can be changed into a prime (404135099) 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, 545759 + ... + 546498.

Almost surely, 2^404135090 is an apocalyptic number.

404135090 is a deficient number, since it is larger than the sum of its proper divisors (342969382).

404135090 is a wasteful number, since it uses less digits than its factorization.

404135090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092301.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 404135090 is about 20103.1114507183. Note that the first 3 decimals coincide. The cubic root of 404135090 is about 739.3365675526.

Adding to 404135090 its reverse (90531404), we get a palindrome (494666494).

The spelling of 404135090 in words is "four hundred four million, one hundred thirty-five thousand, ninety".