380875421 has 2 divisors, whose sum is σ = 380875422. Its totient is φ = 380875420.

The previous prime is 380875409. The next prime is 380875457. The reversal of 380875421 is 124578083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310147321 + 70728100 = 17611^2 + 8410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380875421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380835421) 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, 190437710 + 190437711.

It is an arithmetic number, because the mean of its divisors is an integer number (190437711).

Almost surely, 2^380875421 is an apocalyptic number.

It is an amenable number.

380875421 is a deficient number, since it is larger than the sum of its proper divisors (1).

380875421 is an equidigital number, since it uses as much as digits as its factorization.

380875421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 380875421 is about 19516.0298472820. The cubic root of 380875421 is about 724.8714292816.

The spelling of 380875421 in words is "three hundred eighty million, eight hundred seventy-five thousand, four hundred twenty-one".