939231897 has 8 divisors (see below), whose sum is σ = 1252902144. Its totient is φ = 625858128.

The previous prime is 939231889. The next prime is 939231899. The reversal of 939231897 is 798132939.

It is a happy number.

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

It is not a de Polignac number, because 939231897 - 2³ = 939231889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (939231899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66618 + ... + 79475.

It is an arithmetic number, because the mean of its divisors is an integer number (156612768).

Almost surely, 2^939231897 is an apocalyptic number.

It is an amenable number.

939231897 is a deficient number, since it is larger than the sum of its proper divisors (313670247).

939231897 is a wasteful number, since it uses less digits than its factorization.

939231897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148239.

The product of its digits is 734832, while the sum is 51.

The square root of 939231897 is about 30646.8904947957. The cubic root of 939231897 is about 979.3192193309.

The spelling of 939231897 in words is "nine hundred thirty-nine million, two hundred thirty-one thousand, eight hundred ninety-seven".