47000381 has 2 divisors, whose sum is σ = 47000382. Its totient is φ = 47000380.

The previous prime is 47000377. The next prime is 47000383. The reversal of 47000381 is 18300074.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34987225 + 12013156 = 5915^2 + 3466^2 .

It is a cyclic number.

It is not a de Polignac number, because 47000381 - 2² = 47000377 is a prime.

It is a super-2 number, since 2×47000381² = 4418071628290322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 47000383, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47000383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23500190 + 23500191.

It is an arithmetic number, because the mean of its divisors is an integer number (23500191).

Almost surely, 2^47000381 is an apocalyptic number.

It is an amenable number.

47000381 is a deficient number, since it is larger than the sum of its proper divisors (1).

47000381 is an equidigital number, since it uses as much as digits as its factorization.

47000381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 47000381 is about 6855.6823876256. The cubic root of 47000381 is about 360.8835831621.

The spelling of 47000381 in words is "forty-seven million, three hundred eighty-one", and thus it is an aban number.