40549771 has 4 divisors (see below), whose sum is σ = 40792752. Its totient is φ = 40306792.

The previous prime is 40549763. The next prime is 40549793. The reversal of 40549771 is 17794504.

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 40549771 - 2³ = 40549763 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 40549771.

It is not an unprimeable number, because it can be changed into a prime (40549741) 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, 121240 + ... + 121573.

It is an arithmetic number, because the mean of its divisors is an integer number (10198188).

Almost surely, 2^40549771 is an apocalyptic number.

40549771 is a deficient number, since it is larger than the sum of its proper divisors (242981).

40549771 is a wasteful number, since it uses less digits than its factorization.

40549771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242980.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 40549771 is about 6367.8702091045. The cubic root of 40549771 is about 343.5548906671.

It can be divided in two parts, 405 and 49771, that added together give a square (50176 = 224²).

The spelling of 40549771 in words is "forty million, five hundred forty-nine thousand, seven hundred seventy-one".