404402426 has 16 divisors (see below), whose sum is σ = 648184680. Its totient is φ = 188559360.

The previous prime is 404402387. The next prime is 404402437. The reversal of 404402426 is 624204404.

It can be written as a sum of positive squares in 4 ways, for example, as 378341401 + 26061025 = 19451^2 + 5105^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404402395 and 404402404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50855 + ... + 58266.

Almost surely, 2^404402426 is an apocalyptic number.

404402426 is a deficient number, since it is larger than the sum of its proper divisors (243782254).

404402426 is a wasteful number, since it uses less digits than its factorization.

404402426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109249.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 404402426 is about 20109.7594714606. The cubic root of 404402426 is about 739.4995557211.

The spelling of 404402426 in words is "four hundred four million, four hundred two thousand, four hundred twenty-six".