439970849 has 4 divisors (see below), whose sum is σ = 440018964. Its totient is φ = 439922736.

The previous prime is 439970833. The next prime is 439970899. The reversal of 439970849 is 948079934.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 76877824 + 363093025 = 8768^2 + 19055^2 .

It is a cyclic number.

It is not a de Polignac number, because 439970849 - 2⁴ = 439970833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 439970849.

It is not an unprimeable number, because it can be changed into a prime (439970819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5642 + ... + 30195.

It is an arithmetic number, because the mean of its divisors is an integer number (110004741).

Almost surely, 2^439970849 is an apocalyptic number.

It is an amenable number.

439970849 is a deficient number, since it is larger than the sum of its proper divisors (48115).

439970849 is a wasteful number, since it uses less digits than its factorization.

439970849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48114.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 439970849 is about 20975.4820921952. The cubic root of 439970849 is about 760.5736948317.

The spelling of 439970849 in words is "four hundred thirty-nine million, nine hundred seventy thousand, eight hundred forty-nine".