938870985 has 64 divisors (see below), whose sum is σ = 1737469440. Its totient is φ = 428789760.

The previous prime is 938870983. The next prime is 938871029. The reversal of 938870985 is 589078839.

It is not a de Polignac number, because 938870985 - 2¹ = 938870983 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (938870983) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 233371 + ... + 237359.

It is an arithmetic number, because the mean of its divisors is an integer number (27147960).

Almost surely, 2^938870985 is an apocalyptic number.

It is an amenable number.

938870985 is a deficient number, since it is larger than the sum of its proper divisors (798598455).

938870985 is a wasteful number, since it uses less digits than its factorization.

938870985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The square root of 938870985 is about 30641.0016970725. The cubic root of 938870985 is about 979.1937645697.

The spelling of 938870985 in words is "nine hundred thirty-eight million, eight hundred seventy thousand, nine hundred eighty-five".