400440034 has 4 divisors (see below), whose sum is σ = 600660054. Its totient is φ = 200220016.

The previous prime is 400440013. The next prime is 400440041. The reversal of 400440034 is 430044004.

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

It can be written as a sum of positive squares in only one way, i.e., 211789809 + 188650225 = 14553^2 + 13735^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400439993 and 400440020.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100110007 + ... + 100110010.

Almost surely, 2^400440034 is an apocalyptic number.

400440034 is a deficient number, since it is larger than the sum of its proper divisors (200220020).

400440034 is a wasteful number, since it uses less digits than its factorization.

400440034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200220019.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 400440034 is about 20010.9978261955. The cubic root of 400440034 is about 737.0763838998.

Adding to 400440034 its reverse (430044004), we get a palindrome (830484038).

The spelling of 400440034 in words is "four hundred million, four hundred forty thousand, thirty-four".