47771198 has 4 divisors (see below), whose sum is σ = 71656800. Its totient is φ = 23885598.

The previous prime is 47771197. The next prime is 47771203. The reversal of 47771198 is 89117774.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47771197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11942798 + ... + 11942801.

It is an arithmetic number, because the mean of its divisors is an integer number (17914200).

Almost surely, 2^47771198 is an apocalyptic number.

47771198 is a deficient number, since it is larger than the sum of its proper divisors (23885602).

47771198 is a wasteful number, since it uses less digits than its factorization.

47771198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23885601.

The product of its digits is 98784, while the sum is 44.

The square root of 47771198 is about 6911.6711437973. The cubic root of 47771198 is about 362.8457530326.

The spelling of 47771198 in words is "forty-seven million, seven hundred seventy-one thousand, one hundred ninety-eight".