47372817 has 16 divisors (see below), whose sum is σ = 64095680. Its totient is φ = 31119552.

The previous prime is 47372807. The next prime is 47372827. The reversal of 47372817 is 71827374.

It is an interprime number because it is at equal distance from previous prime (47372807) and next prime (47372827).

It is not a de Polignac number, because 47372817 - 2¹¹ = 47370769 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47372807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90318 + ... + 90840.

It is an arithmetic number, because the mean of its divisors is an integer number (4005980).

Almost surely, 2^47372817 is an apocalyptic number.

It is an amenable number.

47372817 is a deficient number, since it is larger than the sum of its proper divisors (16722863).

47372817 is a wasteful number, since it uses less digits than its factorization.

47372817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912.

The product of its digits is 65856, while the sum is 39.

The square root of 47372817 is about 6882.7913668802. The cubic root of 47372817 is about 361.8343029513.

The spelling of 47372817 in words is "forty-seven million, three hundred seventy-two thousand, eight hundred seventeen".