400204334 has 8 divisors (see below), whose sum is σ = 631901640. Its totient is φ = 189570456.

The previous prime is 400204309. The next prime is 400204339. The reversal of 400204334 is 433402004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400204339) 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, 5265809 + ... + 5265884.

It is an arithmetic number, because the mean of its divisors is an integer number (78987705).

Almost surely, 2^400204334 is an apocalyptic number.

400204334 is a deficient number, since it is larger than the sum of its proper divisors (231697306).

400204334 is a wasteful number, since it uses less digits than its factorization.

400204334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10531714.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 400204334 is about 20005.1076977856. The cubic root of 400204334 is about 736.9317405194.

Adding to 400204334 its reverse (433402004), we get a palindrome (833606338).

The spelling of 400204334 in words is "four hundred million, two hundred four thousand, three hundred thirty-four".