47720943 has 6 divisors (see below), whose sum is σ = 68930264. Its totient is φ = 31813956.

The previous prime is 47720941. The next prime is 47720957. The reversal of 47720943 is 34902774.

It is not a de Polignac number, because 47720943 - 2¹ = 47720941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47720898 and 47720907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47720941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2651155 + ... + 2651172.

Almost surely, 2^47720943 is an apocalyptic number.

47720943 is a deficient number, since it is larger than the sum of its proper divisors (21209321).

47720943 is a wasteful number, since it uses less digits than its factorization.

47720943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302333 (or 5302330 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 47720943 is about 6908.0346698609. The cubic root of 47720943 is about 362.7184712385.

The spelling of 47720943 in words is "forty-seven million, seven hundred twenty thousand, nine hundred forty-three".