939811972 has 48 divisors (see below), whose sum is σ = 1893830400. Its totient is φ = 403587360.

The previous prime is 939811931. The next prime is 939811973. The reversal of 939811972 is 279118939.

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

It is not an unprimeable number, because it can be changed into a prime (939811973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348943 + ... + 351625.

It is an arithmetic number, because the mean of its divisors is an integer number (39454800).

Almost surely, 2^939811972 is an apocalyptic number.

It is an amenable number.

939811972 is an abundant number, since it is smaller than the sum of its proper divisors (954018428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

939811972 is a wasteful number, since it uses less digits than its factorization.

939811972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136 (or 3134 counting only the distinct ones).

The product of its digits is 244944, while the sum is 49.

The square root of 939811972 is about 30656.3528815807. The cubic root of 939811972 is about 979.5207888931.

The spelling of 939811972 in words is "nine hundred thirty-nine million, eight hundred eleven thousand, nine hundred seventy-two".