381227477 has 2 divisors, whose sum is σ = 381227478. Its totient is φ = 381227476.

The previous prime is 381227459. The next prime is 381227479. The reversal of 381227477 is 774722183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312900721 + 68326756 = 17689^2 + 8266^2 .

It is a cyclic number.

It is not a de Polignac number, because 381227477 - 2¹⁰ = 381226453 is a prime.

Together with 381227479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381227479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190613738 + 190613739.

It is an arithmetic number, because the mean of its divisors is an integer number (190613739).

Almost surely, 2^381227477 is an apocalyptic number.

It is an amenable number.

381227477 is a deficient number, since it is larger than the sum of its proper divisors (1).

381227477 is an equidigital number, since it uses as much as digits as its factorization.

381227477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 41.

The square root of 381227477 is about 19525.0474263188. The cubic root of 381227477 is about 725.0947015413.

The spelling of 381227477 in words is "three hundred eighty-one million, two hundred twenty-seven thousand, four hundred seventy-seven".