40788049 has 4 divisors (see below), whose sum is σ = 43187364. Its totient is φ = 38388736.

The previous prime is 40788047. The next prime is 40788053. The reversal of 40788049 is 94088704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12909649 + 27878400 = 3593^2 + 5280^2 .

It is a cyclic number.

It is not a de Polignac number, because 40788049 - 2¹ = 40788047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40788043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199632 + ... + 1199665.

It is an arithmetic number, because the mean of its divisors is an integer number (10796841).

Almost surely, 2^40788049 is an apocalyptic number.

It is an amenable number.

40788049 is a deficient number, since it is larger than the sum of its proper divisors (2399315).

40788049 is a wasteful number, since it uses less digits than its factorization.

40788049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399314.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 40788049 is about 6386.5521997397. The cubic root of 40788049 is about 344.2265076868.

The spelling of 40788049 in words is "forty million, seven hundred eighty-eight thousand, forty-nine".