47437913 has 2 divisors, whose sum is σ = 47437914. Its totient is φ = 47437912.

The previous prime is 47437909. The next prime is 47437919. The reversal of 47437913 is 31973474.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42994249 + 4443664 = 6557^2 + 2108^2 .

It is a cyclic number.

It is not a de Polignac number, because 47437913 - 2² = 47437909 is a prime.

It is not a weakly prime, because it can be changed into another prime (47437919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23718956 + 23718957.

It is an arithmetic number, because the mean of its divisors is an integer number (23718957).

Almost surely, 2^47437913 is an apocalyptic number.

It is an amenable number.

47437913 is a deficient number, since it is larger than the sum of its proper divisors (1).

47437913 is an equidigital number, since it uses as much as digits as its factorization.

47437913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 38.

The square root of 47437913 is about 6887.5186388133. The cubic root of 47437913 is about 361.9999618449. Note that the first 4 decimals are identical.

The spelling of 47437913 in words is "forty-seven million, four hundred thirty-seven thousand, nine hundred thirteen".