379005421 has 2 divisors, whose sum is σ = 379005422. Its totient is φ = 379005420.

The previous prime is 379005413. The next prime is 379005433. The reversal of 379005421 is 124500973.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220522500 + 158482921 = 14850^2 + 12589^2 .

It is a cyclic number.

It is not a de Polignac number, because 379005421 - 2³ = 379005413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (379000421) 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, 189502710 + 189502711.

It is an arithmetic number, because the mean of its divisors is an integer number (189502711).

Almost surely, 2^379005421 is an apocalyptic number.

It is an amenable number.

379005421 is a deficient number, since it is larger than the sum of its proper divisors (1).

379005421 is an equidigital number, since it uses as much as digits as its factorization.

379005421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 379005421 is about 19468.0615624669. The cubic root of 379005421 is about 723.6831719412.

The spelling of 379005421 in words is "three hundred seventy-nine million, five thousand, four hundred twenty-one".