47388745 has 4 divisors (see below), whose sum is σ = 56866500. Its totient is φ = 37910992.

The previous prime is 47388713. The next prime is 47388751. The reversal of 47388745 is 54788374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54788374 = 2 ⋅27394187.

It can be written as a sum of positive squares in 2 ways, for example, as 5294601 + 42094144 = 2301^2 + 6488^2 .

It is a cyclic number.

It is not a de Polignac number, because 47388745 - 2⁵ = 47388713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47388695 and 47388704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4738870 + ... + 4738879.

It is an arithmetic number, because the mean of its divisors is an integer number (14216625).

Almost surely, 2^47388745 is an apocalyptic number.

It is an amenable number.

47388745 is a deficient number, since it is larger than the sum of its proper divisors (9477755).

47388745 is an equidigital number, since it uses as much as digits as its factorization.

47388745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9477754.

The product of its digits is 752640, while the sum is 46.

The square root of 47388745 is about 6883.9483583188. The cubic root of 47388745 is about 361.8748511767.

The spelling of 47388745 in words is "forty-seven million, three hundred eighty-eight thousand, seven hundred forty-five".