8501942389 has 4 divisors (see below), whose sum is σ = 8524141056. Its totient is φ = 8479743724.

The previous prime is 8501942381. The next prime is 8501942401. The reversal of 8501942389 is 9832491058.

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 8501942389 - 2³ = 8501942381 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8501942381) 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, 11098759 + ... + 11099524.

It is an arithmetic number, because the mean of its divisors is an integer number (2131035264).

Almost surely, 2^8501942389 is an apocalyptic number.

It is an amenable number.

8501942389 is a deficient number, since it is larger than the sum of its proper divisors (22198667).

8501942389 is a wasteful number, since it uses less digits than its factorization.

8501942389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22198666.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 8501942389 is about 92205.9780545708. The cubic root of 8501942389 is about 2040.9829932752.

The spelling of 8501942389 in words is "eight billion, five hundred one million, nine hundred forty-two thousand, three hundred eighty-nine".