400234004 has 6 divisors (see below), whose sum is σ = 700409514. Its totient is φ = 200117000.

The previous prime is 400233997. The next prime is 400234007. The reversal of 400234004 is 400432004.

It can be written as a sum of positive squares in only one way, i.e., 260757904 + 139476100 = 16148^2 + 11810^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400234007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50029247 + ... + 50029254.

It is an arithmetic number, because the mean of its divisors is an integer number (116734919).

Almost surely, 2^400234004 is an apocalyptic number.

It is an amenable number.

400234004 is a deficient number, since it is larger than the sum of its proper divisors (300175510).

400234004 is a wasteful number, since it uses less digits than its factorization.

400234004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100058505 (or 100058503 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 400234004 is about 20005.8492446584. The cubic root of 400234004 is about 736.9499514036.

Adding to 400234004 its reverse (400432004), we get a palindrome (800666008).

The spelling of 400234004 in words is "four hundred million, two hundred thirty-four thousand, four".