440709149 has 2 divisors, whose sum is σ = 440709150. Its totient is φ = 440709148.

The previous prime is 440709097. The next prime is 440709169. The reversal of 440709149 is 941907044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278656249 + 162052900 = 16693^2 + 12730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440709149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440709169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220354574 + 220354575.

It is an arithmetic number, because the mean of its divisors is an integer number (220354575).

Almost surely, 2^440709149 is an apocalyptic number.

It is an amenable number.

440709149 is a deficient number, since it is larger than the sum of its proper divisors (1).

440709149 is an equidigital number, since it uses as much as digits as its factorization.

440709149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 440709149 is about 20993.0738340053. The cubic root of 440709149 is about 760.9988879682.

The spelling of 440709149 in words is "four hundred forty million, seven hundred nine thousand, one hundred forty-nine".