404136830 has 8 divisors (see below), whose sum is σ = 727446312. Its totient is φ = 161654728.

The previous prime is 404136809. The next prime is 404136839. The reversal of 404136830 is 38631404.

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

It is a junction number, because it is equal to n+sod(n) for n = 404136793 and 404136802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404136839) 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, 20206832 + ... + 20206851.

It is an arithmetic number, because the mean of its divisors is an integer number (90930789).

Almost surely, 2^404136830 is an apocalyptic number.

404136830 is a deficient number, since it is larger than the sum of its proper divisors (323309482).

404136830 is a wasteful number, since it uses less digits than its factorization.

404136830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40413690.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 404136830 is about 20103.1547275546. The cubic root of 404136830 is about 739.3376286201.

The spelling of 404136830 in words is "four hundred four million, one hundred thirty-six thousand, eight hundred thirty".