40780863 has 12 divisors (see below), whose sum is σ = 61467120. Its totient is φ = 26005056.

The previous prime is 40780849. The next prime is 40780867. The reversal of 40780863 is 36808704.

It is not a de Polignac number, because 40780863 - 2¹⁰ = 40779839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40780867) 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, 98298 + ... + 98711.

It is an arithmetic number, because the mean of its divisors is an integer number (5122260).

Almost surely, 2^40780863 is an apocalyptic number.

40780863 is a deficient number, since it is larger than the sum of its proper divisors (20686257).

40780863 is a wasteful number, since it uses less digits than its factorization.

40780863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197038 (or 197035 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 40780863 is about 6385.9895865872. The cubic root of 40780863 is about 344.2062913323.

The spelling of 40780863 in words is "forty million, seven hundred eighty thousand, eight hundred sixty-three".