47884381 has 2 divisors, whose sum is σ = 47884382. Its totient is φ = 47884380.

The previous prime is 47884373. The next prime is 47884439. The reversal of 47884381 is 18348874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32604100 + 15280281 = 5710^2 + 3909^2 .

It is a cyclic number.

It is not a de Polignac number, because 47884381 - 2³ = 47884373 is a prime.

It is a super-2 number, since 2×47884381² = 4585827887506322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47884301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23942190 + 23942191.

It is an arithmetic number, because the mean of its divisors is an integer number (23942191).

Almost surely, 2^47884381 is an apocalyptic number.

47884381 is the 4377-th centered pentagonal number.

It is an amenable number.

47884381 is a deficient number, since it is larger than the sum of its proper divisors (1).

47884381 is an equidigital number, since it uses as much as digits as its factorization.

47884381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 43.

The square root of 47884381 is about 6919.8541169594. The cubic root of 47884381 is about 363.1320872079.

The spelling of 47884381 in words is "forty-seven million, eight hundred eighty-four thousand, three hundred eighty-one".