47099971 has 2 divisors, whose sum is σ = 47099972. Its totient is φ = 47099970.

The previous prime is 47099953. The next prime is 47099977. The reversal of 47099971 is 17999074.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47099971 - 2¹¹ = 47097923 is a prime.

It is not a weakly prime, because it can be changed into another prime (47099977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23549985 + 23549986.

It is an arithmetic number, because the mean of its divisors is an integer number (23549986).

Almost surely, 2^47099971 is an apocalyptic number.

47099971 is a deficient number, since it is larger than the sum of its proper divisors (1).

47099971 is an equidigital number, since it uses as much as digits as its factorization.

47099971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 47099971 is about 6862.9418619132. The cubic root of 47099971 is about 361.1382976998.

The spelling of 47099971 in words is "forty-seven million, ninety-nine thousand, nine hundred seventy-one".