379209109 has 2 divisors, whose sum is σ = 379209110. Its totient is φ = 379209108.

The previous prime is 379209067. The next prime is 379209121. The reversal of 379209109 is 901902973.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259306609 + 119902500 = 16103^2 + 10950^2 .

It is a cyclic number.

It is not a de Polignac number, because 379209109 - 2²³ = 370820501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (379209139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189604554 + 189604555.

It is an arithmetic number, because the mean of its divisors is an integer number (189604555).

Almost surely, 2^379209109 is an apocalyptic number.

It is an amenable number.

379209109 is a deficient number, since it is larger than the sum of its proper divisors (1).

379209109 is an equidigital number, since it uses as much as digits as its factorization.

379209109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 379209109 is about 19473.2921972634. The cubic root of 379209109 is about 723.8127911771.

The spelling of 379209109 in words is "three hundred seventy-nine million, two hundred nine thousand, one hundred nine".