404779442 has 4 divisors (see below), whose sum is σ = 607169166. Its totient is φ = 202389720.

The previous prime is 404779423. The next prime is 404779451. The reversal of 404779442 is 244977404.

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., 330112561 + 74666881 = 18169^2 + 8641^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 404779442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101194859 + ... + 101194862.

Almost surely, 2^404779442 is an apocalyptic number.

404779442 is a deficient number, since it is larger than the sum of its proper divisors (202389724).

404779442 is a wasteful number, since it uses less digits than its factorization.

404779442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202389723.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 404779442 is about 20119.1312436695. The cubic root of 404779442 is about 739.7292910463.

The spelling of 404779442 in words is "four hundred four million, seven hundred seventy-nine thousand, four hundred forty-two".