47404681 has 2 divisors, whose sum is σ = 47404682. Its totient is φ = 47404680.

The previous prime is 47404663. The next prime is 47404691. The reversal of 47404681 is 18640474.

47404681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32319225 + 15085456 = 5685^2 + 3884^2 .

It is a cyclic number.

It is not a de Polignac number, because 47404681 - 2⁵ = 47404649 is a prime.

It is a super-2 number, since 2×47404681² = 4494407561423522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47404691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23702340 + 23702341.

It is an arithmetic number, because the mean of its divisors is an integer number (23702341).

Almost surely, 2^47404681 is an apocalyptic number.

It is an amenable number.

47404681 is a deficient number, since it is larger than the sum of its proper divisors (1).

47404681 is an equidigital number, since it uses as much as digits as its factorization.

47404681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 47404681 is about 6885.1057362977. The cubic root of 47404681 is about 361.9154106760.

The spelling of 47404681 in words is "forty-seven million, four hundred four thousand, six hundred eighty-one".