8901728243 has 4 divisors (see below), whose sum is σ = 9118843608. Its totient is φ = 8684612880.

The previous prime is 8901728189. The next prime is 8901728257. The reversal of 8901728243 is 3428271098.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8901728243 - 2²⁴ = 8884951027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8901728194 and 8901728203.

It is not an unprimeable number, because it can be changed into a prime (8901728273) 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, 108557621 + ... + 108557702.

It is an arithmetic number, because the mean of its divisors is an integer number (2279710902).

Almost surely, 2^8901728243 is an apocalyptic number.

8901728243 is a deficient number, since it is larger than the sum of its proper divisors (217115365).

8901728243 is a wasteful number, since it uses less digits than its factorization.

8901728243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217115364.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 8901728243 is about 94348.9705455232. The cubic root of 8901728243 is about 2072.4852289386.

The spelling of 8901728243 in words is "eight billion, nine hundred one million, seven hundred twenty-eight thousand, two hundred forty-three".