40244761 has 4 divisors (see below), whose sum is σ = 40345524. Its totient is φ = 40144000.

The previous prime is 40244759. The next prime is 40244777. The reversal of 40244761 is 16744204.

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 25190361 + 15054400 = 5019^2 + 3880^2 .

It is a cyclic number.

It is not a de Polignac number, because 40244761 - 2¹ = 40244759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40244731) 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, 49780 + ... + 50581.

It is an arithmetic number, because the mean of its divisors is an integer number (10086381).

Almost surely, 2^40244761 is an apocalyptic number.

It is an amenable number.

40244761 is a deficient number, since it is larger than the sum of its proper divisors (100763).

40244761 is a wasteful number, since it uses less digits than its factorization.

40244761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100762.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 40244761 is about 6343.8758657464. The cubic root of 40244761 is about 342.6913303965.

Adding to 40244761 its reverse (16744204), we get a palindrome (56988965).

The spelling of 40244761 in words is "forty million, two hundred forty-four thousand, seven hundred sixty-one".