9894723530 has 32 divisors (see below), whose sum is σ = 18395112960. Its totient is φ = 3828116160.

The previous prime is 9894723529. The next prime is 9894723539. The reversal of 9894723530 is 353274989.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9894723539) 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, 633677 + ... + 649103.

It is an arithmetic number, because the mean of its divisors is an integer number (574847280).

Almost surely, 2^9894723530 is an apocalyptic number.

9894723530 is a deficient number, since it is larger than the sum of its proper divisors (8500389430).

9894723530 is a wasteful number, since it uses less digits than its factorization.

9894723530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17534.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 9894723530 is about 99472.2249173105. The cubic root of 9894723530 is about 2146.8476268059.

The spelling of 9894723530 in words is "nine billion, eight hundred ninety-four million, seven hundred twenty-three thousand, five hundred thirty".