40780711 has 4 divisors (see below), whose sum is σ = 40798912. Its totient is φ = 40762512.

The previous prime is 40780709. The next prime is 40780759. The reversal of 40780711 is 11708704.

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 40780711 - 2¹ = 40780709 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 40780711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40780781) 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, 5175 + ... + 10408.

It is an arithmetic number, because the mean of its divisors is an integer number (10199728).

Almost surely, 2^40780711 is an apocalyptic number.

40780711 is a deficient number, since it is larger than the sum of its proper divisors (18201).

40780711 is a wasteful number, since it uses less digits than its factorization.

40780711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18200.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 40780711 is about 6385.9776855232. The cubic root of 40780711 is about 344.2058636855.

It can be divided in two parts, 407 and 80711, that added together give a palindrome (81118).

The spelling of 40780711 in words is "forty million, seven hundred eighty thousand, seven hundred eleven".