47043866 has 4 divisors (see below), whose sum is σ = 70565802. Its totient is φ = 23521932.

The previous prime is 47043863. The next prime is 47043869. The reversal of 47043866 is 66834074.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66834074 = 2 ⋅33417037.

It is an interprime number because it is at equal distance from previous prime (47043863) and next prime (47043869).

It can be written as a sum of positive squares in only one way, i.e., 40132225 + 6911641 = 6335^2 + 2629^2 .

It is not an unprimeable number, because it can be changed into a prime (47043863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11760965 + ... + 11760968.

Almost surely, 2^47043866 is an apocalyptic number.

47043866 is a deficient number, since it is larger than the sum of its proper divisors (23521936).

47043866 is a wasteful number, since it uses less digits than its factorization.

47043866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23521935.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 47043866 is about 6858.8531111258. The cubic root of 47043866 is about 360.9948459860.

The spelling of 47043866 in words is "forty-seven million, forty-three thousand, eight hundred sixty-six".