400453543 has 4 divisors (see below), whose sum is σ = 457661200. Its totient is φ = 343245888.

The previous prime is 400453511. The next prime is 400453549. The reversal of 400453543 is 345354004.

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

It is a cyclic number.

It is not a de Polignac number, because 400453543 - 2⁵ = 400453511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400453549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28603818 + ... + 28603831.

It is an arithmetic number, because the mean of its divisors is an integer number (114415300).

Almost surely, 2^400453543 is an apocalyptic number.

400453543 is a deficient number, since it is larger than the sum of its proper divisors (57207657).

400453543 is an equidigital number, since it uses as much as digits as its factorization.

400453543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57207656.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 400453543 is about 20011.3353627388. The cubic root of 400453543 is about 737.0846723260.

The spelling of 400453543 in words is "four hundred million, four hundred fifty-three thousand, five hundred forty-three".