1239085445 has 8 divisors (see below), whose sum is σ = 1601279736. Its totient is φ = 915016896.

The previous prime is 1239085427. The next prime is 1239085459. The reversal of 1239085445 is 5445809321.

It can be written as a sum of positive squares in 4 ways, for example, as 226382116 + 1012703329 = 15046^2 + 31823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1239085445 - 2⁶ = 1239085381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9531362 + ... + 9531491.

It is an arithmetic number, because the mean of its divisors is an integer number (200159967).

Almost surely, 2^1239085445 is an apocalyptic number.

It is an amenable number.

1239085445 is a deficient number, since it is larger than the sum of its proper divisors (362194291).

1239085445 is a wasteful number, since it uses less digits than its factorization.

1239085445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19062871.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 1239085445 is about 35200.6455196492. The cubic root of 1239085445 is about 1074.0728822807.

The spelling of 1239085445 in words is "one billion, two hundred thirty-nine million, eighty-five thousand, four hundred forty-five".