47287723 has 4 divisors (see below), whose sum is σ = 54043120. Its totient is φ = 40532328.

The previous prime is 47287703. The next prime is 47287753. The reversal of 47287723 is 32778274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47287723 - 2²¹ = 45190571 is a prime.

It is a super-2 number, since 2×47287723² = 4472257493049458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47287703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3377688 + ... + 3377701.

It is an arithmetic number, because the mean of its divisors is an integer number (13510780).

Almost surely, 2^47287723 is an apocalyptic number.

47287723 is a deficient number, since it is larger than the sum of its proper divisors (6755397).

47287723 is an equidigital number, since it uses as much as digits as its factorization.

47287723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6755396.

The product of its digits is 131712, while the sum is 40.

The square root of 47287723 is about 6876.6069394724. The cubic root of 47287723 is about 361.6175233427.

The spelling of 47287723 in words is "forty-seven million, two hundred eighty-seven thousand, seven hundred twenty-three".