404041730 has 8 divisors (see below), whose sum is σ = 727275132. Its totient is φ = 161616688.

The previous prime is 404041709. The next prime is 404041733. The reversal of 404041730 is 37140404.

It can be written as a sum of positive squares in 2 ways, for example, as 396049801 + 7991929 = 19901^2 + 2827^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404041696 and 404041705.

It is not an unprimeable number, because it can be changed into a prime (404041733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20202077 + ... + 20202096.

Almost surely, 2^404041730 is an apocalyptic number.

404041730 is a deficient number, since it is larger than the sum of its proper divisors (323233402).

404041730 is a wasteful number, since it uses less digits than its factorization.

404041730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40404180.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 404041730 is about 20100.7892879857. The cubic root of 404041730 is about 739.2796313288.

The spelling of 404041730 in words is "four hundred four million, forty-one thousand, seven hundred thirty".