47294072221 has 6 divisors (see below), whose sum is σ = 51984393566. Its totient is φ = 42994611000.

The previous prime is 47294072201. The next prime is 47294072227. The reversal of 47294072221 is 12227049274.

It can be written as a sum of positive squares in only one way, i.e., 31857252196 + 15436820025 = 178486^2 + 124245^2 .

It is not a de Polignac number, because 47294072221 - 2¹³ = 47294064029 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 (47294072227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 195429930 + ... + 195430171.

Almost surely, 2^47294072221 is an apocalyptic number.

It is an amenable number.

47294072221 is a deficient number, since it is larger than the sum of its proper divisors (4690321345).

47294072221 is a wasteful number, since it uses less digits than its factorization.

47294072221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390860123 (or 390860112 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 47294072221 in words is "forty-seven billion, two hundred ninety-four million, seventy-two thousand, two hundred twenty-one".