47149937 has 2 divisors, whose sum is σ = 47149938. Its totient is φ = 47149936.

The previous prime is 47149933. The next prime is 47149967. The reversal of 47149937 is 73994174.

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., 46117681 + 1032256 = 6791^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 47149937 - 2² = 47149933 is a prime.

It is not a weakly prime, because it can be changed into another prime (47149933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23574968 + 23574969.

It is an arithmetic number, because the mean of its divisors is an integer number (23574969).

Almost surely, 2^47149937 is an apocalyptic number.

It is an amenable number.

47149937 is a deficient number, since it is larger than the sum of its proper divisors (1).

47149937 is an equidigital number, since it uses as much as digits as its factorization.

47149937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 47149937 is about 6866.5811726069. The cubic root of 47149937 is about 361.2659570782.

The spelling of 47149937 in words is "forty-seven million, one hundred forty-nine thousand, nine hundred thirty-seven".