8416649 has 8 divisors (see below), whose sum is σ = 9153288. Its totient is φ = 7706880.

The previous prime is 8416637. The next prime is 8416651. The reversal of 8416649 is 9466148.

It can be written as a sum of positive squares in 4 ways, for example, as 2325625 + 6091024 = 1525^2 + 2468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8416649 - 2⁸ = 8416393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8416669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6062 + ... + 7319.

It is an arithmetic number, because the mean of its divisors is an integer number (1144161).

Almost surely, 2^8416649 is an apocalyptic number.

It is an amenable number.

8416649 is a deficient number, since it is larger than the sum of its proper divisors (736639).

8416649 is a wasteful number, since it uses less digits than its factorization.

8416649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13435.

The product of its digits is 41472, while the sum is 38.

The square root of 8416649 is about 2901.1461528162. The cubic root of 8416649 is about 203.4134841829.

The spelling of 8416649 in words is "eight million, four hundred sixteen thousand, six hundred forty-nine".