409379 has 2 divisors, whose sum is σ = 409380. Its totient is φ = 409378.

The previous prime is 409369. The next prime is 409391. The reversal of 409379 is 973904.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-409379 is a prime.

It is a plaindrome in base 12 and base 13.

It is not a weakly prime, because it can be changed into another prime (409349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204689 + 204690.

It is an arithmetic number, because the mean of its divisors is an integer number (204690).

2⁴⁰⁹³⁷⁹ is an apocalyptic number.

409379 is a deficient number, since it is larger than the sum of its proper divisors (1).

409379 is an equidigital number, since it uses as much as digits as its factorization.

409379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 409379 is about 639.8273204545. The cubic root of 409379 is about 74.2520622795.

The spelling of 409379 in words is "four hundred nine thousand, three hundred seventy-nine".