47045747 has 4 divisors (see below), whose sum is σ = 53766576. Its totient is φ = 40324920.

The previous prime is 47045717. The next prime is 47045797. The reversal of 47045747 is 74754074.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74754074 = 2 ⋅37377037.

It is a cyclic number.

It is not a de Polignac number, because 47045747 - 2¹² = 47041651 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 47045747.

It is not an unprimeable number, because it can be changed into a prime (47045717) 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, 3360404 + ... + 3360417.

It is an arithmetic number, because the mean of its divisors is an integer number (13441644).

Almost surely, 2^47045747 is an apocalyptic number.

47045747 is a deficient number, since it is larger than the sum of its proper divisors (6720829).

47045747 is an equidigital number, since it uses as much as digits as its factorization.

47045747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720828.

The product of its (nonzero) digits is 109760, while the sum is 38.

The square root of 47045747 is about 6858.9902318053. The cubic root of 47045747 is about 360.9996572562. Note that the first 3 decimals are identical.

The spelling of 47045747 in words is "forty-seven million, forty-five thousand, seven hundred forty-seven".