8409379 has 6 divisors (see below), whose sum is σ = 9243500. Its totient is φ = 7644780.

The previous prime is 8409377. The next prime is 8409383. The reversal of 8409379 is 9739048.

It is not a de Polignac number, because 8409379 - 2¹ = 8409377 is a prime.

It is a Duffinian number.

8409379 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8409377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34629 + ... + 34870.

Almost surely, 2^8409379 is an apocalyptic number.

8409379 is a deficient number, since it is larger than the sum of its proper divisors (834121).

8409379 is a wasteful number, since it uses less digits than its factorization.

8409379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69521 (or 69510 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 8409379 is about 2899.8929290579. The cubic root of 8409379 is about 203.3549002177.

The spelling of 8409379 in words is "eight million, four hundred nine thousand, three hundred seventy-nine".