40872863 has 4 divisors (see below), whose sum is σ = 42649968. Its totient is φ = 39095760.

The previous prime is 40872851. The next prime is 40872869. The reversal of 40872863 is 36827804.

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 40872863 - 2⁴ = 40872847 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 (40872869) 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, 888518 + ... + 888563.

It is an arithmetic number, because the mean of its divisors is an integer number (10662492).

Almost surely, 2^40872863 is an apocalyptic number.

40872863 is a deficient number, since it is larger than the sum of its proper divisors (1777105).

40872863 is a wasteful number, since it uses less digits than its factorization.

40872863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777104.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 40872863 is about 6393.1887974625. The cubic root of 40872863 is about 344.4649354866.

The spelling of 40872863 in words is "forty million, eight hundred seventy-two thousand, eight hundred sixty-three".