47940197 has 4 divisors (see below), whose sum is σ = 49235916. Its totient is φ = 46644480.

The previous prime is 47940169. The next prime is 47940223. The reversal of 47940197 is 79104974.

It is a happy number.

47940197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29008996 + 18931201 = 5386^2 + 4351^2 .

It is a cyclic number.

It is not a de Polignac number, because 47940197 - 2⁶ = 47940133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47940157) 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 in 3 ways as a sum of consecutive naturals, for example, 647804 + ... + 647877.

It is an arithmetic number, because the mean of its divisors is an integer number (12308979).

Almost surely, 2^47940197 is an apocalyptic number.

It is an amenable number.

47940197 is a deficient number, since it is larger than the sum of its proper divisors (1295719).

47940197 is a wasteful number, since it uses less digits than its factorization.

47940197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295718.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 47940197 is about 6923.8859753754. The cubic root of 47940197 is about 363.2731263105.

The spelling of 47940197 in words is "forty-seven million, nine hundred forty thousand, one hundred ninety-seven".