40870443 has 6 divisors (see below), whose sum is σ = 54508692. Its totient is φ = 27239580.

The previous prime is 40870441. The next prime is 40870447. The reversal of 40870443 is 34407804.

It is not a de Polignac number, because 40870443 - 2¹ = 40870441 is a prime.

It is a super-2 number, since 2×40870443² = 3340786222032498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40870443.

It is not an unprimeable number, because it can be changed into a prime (40870441) 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, 9228 + ... + 12918.

It is an arithmetic number, because the mean of its divisors is an integer number (9084782).

Almost surely, 2^40870443 is an apocalyptic number.

40870443 is a deficient number, since it is larger than the sum of its proper divisors (13638249).

40870443 is an frugal number, since it uses more digits than its factorization.

40870443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7385 (or 3694 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 40870443 is about 6392.9995307367. Note that the first 3 decimals coincide. The cubic root of 40870443 is about 344.4581369937.

The spelling of 40870443 in words is "forty million, eight hundred seventy thousand, four hundred forty-three".