379319821 has 2 divisors, whose sum is σ = 379319822. Its totient is φ = 379319820.

The previous prime is 379319807. The next prime is 379319833. The reversal of 379319821 is 128913973.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350213796 + 29106025 = 18714^2 + 5395^2 .

It is a cyclic number.

It is not a de Polignac number, because 379319821 - 2⁹ = 379319309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (379119821) 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, 189659910 + 189659911.

It is an arithmetic number, because the mean of its divisors is an integer number (189659911).

Almost surely, 2^379319821 is an apocalyptic number.

It is an amenable number.

379319821 is a deficient number, since it is larger than the sum of its proper divisors (1).

379319821 is an equidigital number, since it uses as much as digits as its factorization.

379319821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 379319821 is about 19476.1346524407. The cubic root of 379319821 is about 723.8832245805.

The spelling of 379319821 in words is "three hundred seventy-nine million, three hundred nineteen thousand, eight hundred twenty-one".