404166433 has 4 divisors (see below), whose sum is σ = 440908848. Its totient is φ = 367424020.

The previous prime is 404166431. The next prime is 404166443. The reversal of 404166433 is 334661404.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404166433 - 2¹ = 404166431 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404166395 and 404166404.

It is not an unprimeable number, because it can be changed into a prime (404166431) 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, 18371191 + ... + 18371212.

It is an arithmetic number, because the mean of its divisors is an integer number (110227212).

Almost surely, 2^404166433 is an apocalyptic number.

It is an amenable number.

404166433 is a deficient number, since it is larger than the sum of its proper divisors (36742415).

404166433 is a wasteful number, since it uses less digits than its factorization.

404166433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36742414.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 404166433 is about 20103.8909915469. The cubic root of 404166433 is about 739.3556803258.

The spelling of 404166433 in words is "four hundred four million, one hundred sixty-six thousand, four hundred thirty-three".