406872943 has 4 divisors (see below), whose sum is σ = 407079088. Its totient is φ = 406666800.

The previous prime is 406872913. The next prime is 406872953. The reversal of 406872943 is 349278604.

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 406872943 - 2²⁵ = 373318511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 406872943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406872913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100083 + ... + 104068.

It is an arithmetic number, because the mean of its divisors is an integer number (101769772).

Almost surely, 2^406872943 is an apocalyptic number.

406872943 is a deficient number, since it is larger than the sum of its proper divisors (206145).

406872943 is a wasteful number, since it uses less digits than its factorization.

406872943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206144.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 406872943 is about 20171.0917651970. The cubic root of 406872943 is about 741.0023809404.

The spelling of 406872943 in words is "four hundred six million, eight hundred seventy-two thousand, nine hundred forty-three".