939901971 has 8 divisors (see below), whose sum is σ = 1260204480. Its totient is φ = 623100392.

The previous prime is 939901931. The next prime is 939901987. The reversal of 939901971 is 179109939.

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 939901971 - 2¹⁴ = 939885587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 939901971.

It is not an unprimeable number, because it can be changed into a prime (939901931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874605 + ... + 875678.

It is an arithmetic number, because the mean of its divisors is an integer number (157525560).

Almost surely, 2^939901971 is an apocalyptic number.

939901971 is a deficient number, since it is larger than the sum of its proper divisors (320302509).

939901971 is a wasteful number, since it uses less digits than its factorization.

939901971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750465.

The product of its (nonzero) digits is 137781, while the sum is 48.

The square root of 939901971 is about 30657.8207151128. The cubic root of 939901971 is about 979.5520551039.

The spelling of 939901971 in words is "nine hundred thirty-nine million, nine hundred one thousand, nine hundred seventy-one".