47479381 has 2 divisors, whose sum is σ = 47479382. Its totient is φ = 47479380.

The previous prime is 47479373. The next prime is 47479417. The reversal of 47479381 is 18397474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34222500 + 13256881 = 5850^2 + 3641^2 .

It is a cyclic number.

It is not a de Polignac number, because 47479381 - 2³ = 47479373 is a prime.

It is a super-2 number, since 2×47479381² = 4508583240286322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41479381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23739690 + 23739691.

It is an arithmetic number, because the mean of its divisors is an integer number (23739691).

Almost surely, 2^47479381 is an apocalyptic number.

It is an amenable number.

47479381 is a deficient number, since it is larger than the sum of its proper divisors (1).

47479381 is an equidigital number, since it uses as much as digits as its factorization.

47479381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 47479381 is about 6890.5283541975. The cubic root of 47479381 is about 362.1054122571.

The spelling of 47479381 in words is "forty-seven million, four hundred seventy-nine thousand, three hundred eighty-one".