439507949 has 2 divisors, whose sum is σ = 439507950. Its totient is φ = 439507948.

The previous prime is 439507921. The next prime is 439507973. The reversal of 439507949 is 949705934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223711849 + 215796100 = 14957^2 + 14690^2 .

It is a cyclic number.

It is not a de Polignac number, because 439507949 - 2²⁴ = 422730733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 439507897 and 439507906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (439507909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219753974 + 219753975.

It is an arithmetic number, because the mean of its divisors is an integer number (219753975).

Almost surely, 2^439507949 is an apocalyptic number.

It is an amenable number.

439507949 is a deficient number, since it is larger than the sum of its proper divisors (1).

439507949 is an equidigital number, since it uses as much as digits as its factorization.

439507949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 439507949 is about 20964.4448769816. Note that the first 3 decimals coincide. The cubic root of 439507949 is about 760.3068641929.

The spelling of 439507949 in words is "four hundred thirty-nine million, five hundred seven thousand, nine hundred forty-nine".