379308409 has 2 divisors, whose sum is σ = 379308410. Its totient is φ = 379308408.

The previous prime is 379308407. The next prime is 379308451. The reversal of 379308409 is 904803973.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269058409 + 110250000 = 16403^2 + 10500^2 .

It is a cyclic number.

It is not a de Polignac number, because 379308409 - 2¹ = 379308407 is a prime.

It is a super-2 number, since 2×379308409² = 287749738276222562, which contains 22 as substring.

Together with 379308407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (379308407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189654204 + 189654205.

It is an arithmetic number, because the mean of its divisors is an integer number (189654205).

Almost surely, 2^379308409 is an apocalyptic number.

It is an amenable number.

379308409 is a deficient number, since it is larger than the sum of its proper divisors (1).

379308409 is an equidigital number, since it uses as much as digits as its factorization.

379308409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 379308409 is about 19475.8416762922. The cubic root of 379308409 is about 723.8759650616.

The spelling of 379308409 in words is "three hundred seventy-nine million, three hundred eight thousand, four hundred nine".