380005421 has 2 divisors, whose sum is σ = 380005422. Its totient is φ = 380005420.

The previous prime is 380005397. The next prime is 380005447. The reversal of 380005421 is 124500083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319336900 + 60668521 = 17870^2 + 7789^2 .

It is a cyclic number.

It is not a de Polignac number, because 380005421 - 2²⁶ = 312896557 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 (380005321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190002710 + 190002711.

It is an arithmetic number, because the mean of its divisors is an integer number (190002711).

Almost surely, 2^380005421 is an apocalyptic number.

It is an amenable number.

380005421 is a deficient number, since it is larger than the sum of its proper divisors (1).

380005421 is an equidigital number, since it uses as much as digits as its factorization.

380005421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 380005421 is about 19493.7277348382. The cubic root of 380005421 is about 724.3190886393.

The spelling of 380005421 in words is "three hundred eighty million, five thousand, four hundred twenty-one".