404340243 has 32 divisors (see below), whose sum is σ = 574594560. Its totient is φ = 252510720.

The previous prime is 404340241. The next prime is 404340247. The reversal of 404340243 is 342043404.

It is a happy number.

It is not a de Polignac number, because 404340243 - 2¹ = 404340241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404340241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413371 + ... + 414347.

It is an arithmetic number, because the mean of its divisors is an integer number (17956080).

Almost surely, 2^404340243 is an apocalyptic number.

404340243 is a deficient number, since it is larger than the sum of its proper divisors (170254317).

404340243 is a wasteful number, since it uses less digits than its factorization.

404340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 404340243 is about 20108.2133219240. The cubic root of 404340243 is about 739.4616506913.

Adding to 404340243 its reverse (342043404), we get a palindrome (746383647).

The spelling of 404340243 in words is "four hundred four million, three hundred forty thousand, two hundred forty-three".