939721073 has 4 divisors (see below), whose sum is σ = 970034688. Its totient is φ = 909407460.

The previous prime is 939721067. The next prime is 939721093. The reversal of 939721073 is 370127939.

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 939721073 - 2⁶ = 939721009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 939721073.

It is not an unprimeable number, because it can be changed into a prime (939721063) 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, 15156761 + ... + 15156822.

It is an arithmetic number, because the mean of its divisors is an integer number (242508672).

Almost surely, 2^939721073 is an apocalyptic number.

It is an amenable number.

939721073 is a deficient number, since it is larger than the sum of its proper divisors (30313615).

939721073 is a wasteful number, since it uses less digits than its factorization.

939721073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30313614.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 939721073 is about 30654.8702982087. The cubic root of 939721073 is about 979.4892079905.

The spelling of 939721073 in words is "nine hundred thirty-nine million, seven hundred twenty-one thousand, seventy-three".