440240749 has 4 divisors (see below), whose sum is σ = 474105436. Its totient is φ = 406376064.

The previous prime is 440240741. The next prime is 440240777. The reversal of 440240749 is 947042044.

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 76003524 + 364237225 = 8718^2 + 19085^2 .

It is a cyclic number.

It is not a de Polignac number, because 440240749 - 2³ = 440240741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440240741) 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, 16932324 + ... + 16932349.

It is an arithmetic number, because the mean of its divisors is an integer number (118526359).

Almost surely, 2^440240749 is an apocalyptic number.

It is an amenable number.

440240749 is a deficient number, since it is larger than the sum of its proper divisors (33864687).

440240749 is a wasteful number, since it uses less digits than its factorization.

440240749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33864686.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 440240749 is about 20981.9148077577. The cubic root of 440240749 is about 760.7291876172.

The spelling of 440240749 in words is "four hundred forty million, two hundred forty thousand, seven hundred forty-nine".