8735921 has 4 divisors (see below), whose sum is σ = 8745792. Its totient is φ = 8726052.

The previous prime is 8735897. The next prime is 8735933. The reversal of 8735921 is 1295378.

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 a de Polignac number, because none of the positive numbers 2^k-8735921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8735941) 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, 3461 + ... + 5426.

It is an arithmetic number, because the mean of its divisors is an integer number (2186448).

Almost surely, 2^8735921 is an apocalyptic number.

It is an amenable number.

8735921 is a deficient number, since it is larger than the sum of its proper divisors (9871).

8735921 is an equidigital number, since it uses as much as digits as its factorization.

8735921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9870.

The product of its digits is 15120, while the sum is 35.

The square root of 8735921 is about 2955.6591481428. The cubic root of 8735921 is about 205.9536845635.

The spelling of 8735921 in words is "eight million, seven hundred thirty-five thousand, nine hundred twenty-one".