47853917 has 2 divisors, whose sum is σ = 47853918. Its totient is φ = 47853916.

The previous prime is 47853889. The next prime is 47853941. The reversal of 47853917 is 71935874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47416996 + 436921 = 6886^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 47853917 - 2⁶ = 47853853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47853017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23926958 + 23926959.

It is an arithmetic number, because the mean of its divisors is an integer number (23926959).

Almost surely, 2^47853917 is an apocalyptic number.

It is an amenable number.

47853917 is a deficient number, since it is larger than the sum of its proper divisors (1).

47853917 is an equidigital number, since it uses as much as digits as its factorization.

47853917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 47853917 is about 6917.6525642735. The cubic root of 47853917 is about 363.0550627692.

The spelling of 47853917 in words is "forty-seven million, eight hundred fifty-three thousand, nine hundred seventeen".