94139609 has 4 divisors (see below), whose sum is σ = 94409700. Its totient is φ = 93869520.

The previous prime is 94139593. The next prime is 94139611. The reversal of 94139609 is 90693149.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54096025 + 40043584 = 7355^2 + 6328^2 .

It is a cyclic number.

It is not a de Polignac number, because 94139609 - 2⁴ = 94139593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94139629) 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, 134522 + ... + 135219.

It is an arithmetic number, because the mean of its divisors is an integer number (23602425).

Almost surely, 2^94139609 is an apocalyptic number.

It is an amenable number.

94139609 is a deficient number, since it is larger than the sum of its proper divisors (270091).

94139609 is a wasteful number, since it uses less digits than its factorization.

94139609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270090.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 94139609 is about 9702.5568279707. The cubic root of 94139609 is about 454.9085820442.

The spelling of 94139609 in words is "ninety-four million, one hundred thirty-nine thousand, six hundred nine".