47849969 has 2 divisors, whose sum is σ = 47849970. Its totient is φ = 47849968.

The previous prime is 47849939. The next prime is 47849981. The reversal of 47849969 is 96994874.

47849969 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., 41152225 + 6697744 = 6415^2 + 2588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47849969 is a prime.

It is a super-2 number, since 2×47849969² = 4579239066601922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (47849929) 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, 23924984 + 23924985.

It is an arithmetic number, because the mean of its divisors is an integer number (23924985).

Almost surely, 2^47849969 is an apocalyptic number.

It is an amenable number.

47849969 is a deficient number, since it is larger than the sum of its proper divisors (1).

47849969 is an equidigital number, since it uses as much as digits as its factorization.

47849969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 56.

The square root of 47849969 is about 6917.3672014720. The cubic root of 47849969 is about 363.0450783492.

The spelling of 47849969 in words is "forty-seven million, eight hundred forty-nine thousand, nine hundred sixty-nine".