439090609 has 4 divisors (see below), whose sum is σ = 439363440. Its totient is φ = 438817780.

The previous prime is 439090601. The next prime is 439090621. The reversal of 439090609 is 906090934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 439090609 - 2³ = 439090601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439090601) 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, 133987 + ... + 137224.

It is an arithmetic number, because the mean of its divisors is an integer number (109840860).

Almost surely, 2^439090609 is an apocalyptic number.

It is an amenable number.

439090609 is a deficient number, since it is larger than the sum of its proper divisors (272831).

439090609 is a wasteful number, since it uses less digits than its factorization.

439090609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272830.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 439090609 is about 20954.4889940079. The cubic root of 439090609 is about 760.0661351727.

The spelling of 439090609 in words is "four hundred thirty-nine million, ninety thousand, six hundred nine".