404846842 has 4 divisors (see below), whose sum is σ = 607270266. Its totient is φ = 202423420.

The previous prime is 404846837. The next prime is 404846843. The reversal of 404846842 is 248648404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 391604521 + 13242321 = 19789^2 + 3639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404846795 and 404846804.

It is not an unprimeable number, because it can be changed into a prime (404846843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101211709 + ... + 101211712.

Almost surely, 2^404846842 is an apocalyptic number.

404846842 is a deficient number, since it is larger than the sum of its proper divisors (202423424).

404846842 is a wasteful number, since it uses less digits than its factorization.

404846842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202423423.

The product of its (nonzero) digits is 196608, while the sum is 40.

The square root of 404846842 is about 20120.8061965717. The cubic root of 404846842 is about 739.7703463157.

The spelling of 404846842 in words is "four hundred four million, eight hundred forty-six thousand, eight hundred forty-two".