47291873 has 6 divisors (see below), whose sum is σ = 48419154. Its totient is φ = 46190256.

The previous prime is 47291869. The next prime is 47291899. The reversal of 47291873 is 37819274.

It can be written as a sum of positive squares in only one way, i.e., 28430224 + 18861649 = 5332^2 + 4343^2 .

It is not a de Polignac number, because 47291873 - 2² = 47291869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47291873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47294873) 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, 10940 + ... + 14637.

It is an arithmetic number, because the mean of its divisors is an integer number (8069859).

Almost surely, 2^47291873 is an apocalyptic number.

47291873 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

47291873 is a deficient number, since it is larger than the sum of its proper divisors (1127281).

47291873 is an equidigital number, since it uses as much as digits as its factorization.

47291873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25663 (or 25620 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 47291873 is about 6876.9086805046. The cubic root of 47291873 is about 361.6281016262.

The spelling of 47291873 in words is "forty-seven million, two hundred ninety-one thousand, eight hundred seventy-three".