9389721052 has 6 divisors (see below), whose sum is σ = 16432011848. Its totient is φ = 4694860524.

The previous prime is 9389721049. The next prime is 9389721071. The reversal of 9389721052 is 2501279839.

It is a super-2 number, since 2×9389721052² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9389720993 and 9389721011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1173715128 + ... + 1173715135.

Almost surely, 2^9389721052 is an apocalyptic number.

It is an amenable number.

9389721052 is a deficient number, since it is larger than the sum of its proper divisors (7042290796).

9389721052 is a wasteful number, since it uses less digits than its factorization.

9389721052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347430267 (or 2347430265 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 9389721052 is about 96900.5730220415. The cubic root of 9389721052 is about 2109.6847497390.

The spelling of 9389721052 in words is "nine billion, three hundred eighty-nine million, seven hundred twenty-one thousand, fifty-two".