400740034 has 4 divisors (see below), whose sum is σ = 601110054. Its totient is φ = 200370016.

The previous prime is 400739993. The next prime is 400740037. The reversal of 400740034 is 430047004.

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., 290804809 + 109935225 = 17053^2 + 10485^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 400739987 and 400740014.

It is not an unprimeable number, because it can be changed into a prime (400740037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100185007 + ... + 100185010.

Almost surely, 2^400740034 is an apocalyptic number.

400740034 is a deficient number, since it is larger than the sum of its proper divisors (200370020).

400740034 is a wasteful number, since it uses less digits than its factorization.

400740034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200370019.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 400740034 is about 20018.4923008702. The cubic root of 400740034 is about 737.2604045599.

Adding to 400740034 its reverse (430047004), we get a palindrome (830787038).

The spelling of 400740034 in words is "four hundred million, seven hundred forty thousand, thirty-four".