404453243 has 4 divisors (see below), whose sum is σ = 404979960. Its totient is φ = 403926528.

The previous prime is 404453221. The next prime is 404453251. The reversal of 404453243 is 342354404.

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

It is a cyclic number.

It is not a de Polignac number, because 404453243 - 2¹⁴ = 404436859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404453143) 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, 262205 + ... + 263742.

It is an arithmetic number, because the mean of its divisors is an integer number (101244990).

Almost surely, 2^404453243 is an apocalyptic number.

404453243 is a deficient number, since it is larger than the sum of its proper divisors (526717).

404453243 is an equidigital number, since it uses as much as digits as its factorization.

404453243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526716.

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 404453243 is about 20111.0229227655. The cubic root of 404453243 is about 739.5305294678.

The spelling of 404453243 in words is "four hundred four million, four hundred fifty-three thousand, two hundred forty-three".