400043704 has 24 divisors (see below), whose sum is σ = 770923440. Its totient is φ = 194610528.

The previous prime is 400043701. The next prime is 400043731. The reversal of 400043704 is 407340004.

It is a super-2 number, since 2×400043704² = 320069930220079232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400043701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7312 + ... + 29215.

It is an arithmetic number, because the mean of its divisors is an integer number (32121810).

Almost surely, 2^400043704 is an apocalyptic number.

It is an amenable number.

400043704 is a deficient number, since it is larger than the sum of its proper divisors (370879736).

400043704 is a wasteful number, since it uses less digits than its factorization.

400043704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36607 (or 36566 counting only the distinct ones).

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

The square root of 400043704 is about 20001.0925701573. The cubic root of 400043704 is about 736.8331332363.

Adding to 400043704 its reverse (407340004), we get a palindrome (807383708).

The spelling of 400043704 in words is "four hundred million, forty-three thousand, seven hundred four".