440206749 has 12 divisors (see below), whose sum is σ = 636357696. Its totient is φ = 293238792.

The previous prime is 440206733. The next prime is 440206751. The reversal of 440206749 is 947602044.

440206749 is a `hidden beast` number, since 440 + 206 + 7 + 4 + 9 = 666.

It is not a de Polignac number, because 440206749 - 2⁴ = 440206733 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440206769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6949 + ... + 30474.

It is an arithmetic number, because the mean of its divisors is an integer number (53029808).

Almost surely, 2^440206749 is an apocalyptic number.

It is an amenable number.

440206749 is a deficient number, since it is larger than the sum of its proper divisors (196150947).

440206749 is a wasteful number, since it uses less digits than its factorization.

440206749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38736 (or 38733 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 440206749 is about 20981.1045705416. The cubic root of 440206749 is about 760.7096032887.

The spelling of 440206749 in words is "four hundred forty million, two hundred six thousand, seven hundred forty-nine".