47994689 has 4 divisors (see below), whose sum is σ = 50817924. Its totient is φ = 45171456.

The previous prime is 47994677. The next prime is 47994701. The reversal of 47994689 is 98649974.

47994689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98649974 = 2 ⋅49324987.

It is an interprime number because it is at equal distance from previous prime (47994677) and next prime (47994701).

It can be written as a sum of positive squares in 2 ways, for example, as 42354064 + 5640625 = 6508^2 + 2375^2 .

It is a cyclic number.

It is not a de Polignac number, because 47994689 - 2⁴ = 47994673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47994619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1411592 + ... + 1411625.

It is an arithmetic number, because the mean of its divisors is an integer number (12704481).

Almost surely, 2^47994689 is an apocalyptic number.

It is an amenable number.

47994689 is a deficient number, since it is larger than the sum of its proper divisors (2823235).

47994689 is a wasteful number, since it uses less digits than its factorization.

47994689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823234.

The product of its digits is 3919104, while the sum is 56.

The square root of 47994689 is about 6927.8199312626. The cubic root of 47994689 is about 363.4107142839.

The spelling of 47994689 in words is "forty-seven million, nine hundred ninety-four thousand, six hundred eighty-nine".