8694421 has 4 divisors (see below), whose sum is σ = 8725644. Its totient is φ = 8663200.

The previous prime is 8694397. The next prime is 8694449. The reversal of 8694421 is 1244968.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4157521 + 4536900 = 2039^2 + 2130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8694421 is a prime.

It is a Duffinian number.

8694421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8694451) 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, 15190 + ... + 15751.

It is an arithmetic number, because the mean of its divisors is an integer number (2181411).

Almost surely, 2^8694421 is an apocalyptic number.

It is an amenable number.

8694421 is a deficient number, since it is larger than the sum of its proper divisors (31223).

8694421 is a wasteful number, since it uses less digits than its factorization.

8694421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31222.

The product of its digits is 13824, while the sum is 34.

The square root of 8694421 is about 2948.6303600146. The cubic root of 8694421 is about 205.6270390562.

The spelling of 8694421 in words is "eight million, six hundred ninety-four thousand, four hundred twenty-one".