404454243 has 4 divisors (see below), whose sum is σ = 539272328. Its totient is φ = 269636160.

The previous prime is 404454227. The next prime is 404454251. The reversal of 404454243 is 342454404.

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

It is not a de Polignac number, because 404454243 - 2⁴ = 404454227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404454243.

It is not an unprimeable number, because it can be changed into a prime (404454283) 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, 67409038 + ... + 67409043.

It is an arithmetic number, because the mean of its divisors is an integer number (134818082).

Almost surely, 2^404454243 is an apocalyptic number.

404454243 is a deficient number, since it is larger than the sum of its proper divisors (134818085).

404454243 is a wasteful number, since it uses less digits than its factorization.

404454243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134818084.

The product of its (nonzero) digits is 30720, while the sum is 30.

The square root of 404454243 is about 20111.0477847376. The cubic root of 404454243 is about 739.5311389572.

The spelling of 404454243 in words is "four hundred four million, four hundred fifty-four thousand, two hundred forty-three".