8494209 has 6 divisors (see below), whose sum is σ = 12269426. Its totient is φ = 5662800.

The previous prime is 8494181. The next prime is 8494219. The reversal of 8494209 is 9024948.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8294400 + 199809 = 2880^2 + 447^2 .

It is not a de Polignac number, because 8494209 - 2⁷ = 8494081 is a prime.

It is a Duffinian number.

8494209 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8494219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 471892 + ... + 471909.

Almost surely, 2^8494209 is an apocalyptic number.

It is an amenable number.

8494209 is a deficient number, since it is larger than the sum of its proper divisors (3775217).

8494209 is a wasteful number, since it uses less digits than its factorization.

8494209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943807 (or 943804 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 8494209 is about 2914.4826299019. The cubic root of 8494209 is about 204.0363977731.

The spelling of 8494209 in words is "eight million, four hundred ninety-four thousand, two hundred nine".