400034043 has 12 divisors (see below), whose sum is σ = 578818968. Its totient is φ = 266231520.

The previous prime is 400034039. The next prime is 400034053. The reversal of 400034043 is 340430004.

It is not a de Polignac number, because 400034043 - 2² = 400034039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400034003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32578 + ... + 43143.

It is an arithmetic number, because the mean of its divisors is an integer number (48234914).

Almost surely, 2^400034043 is an apocalyptic number.

400034043 is a deficient number, since it is larger than the sum of its proper divisors (178784925).

400034043 is a wasteful number, since it uses less digits than its factorization.

400034043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76314 (or 76311 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 400034043 is about 20000.8510568926. The cubic root of 400034043 is about 736.8272017158.

Adding to 400034043 its reverse (340430004), we get a palindrome (740464047).

The spelling of 400034043 in words is "four hundred million, thirty-four thousand, forty-three".