47278489 has 8 divisors (see below), whose sum is σ = 48646080. Its totient is φ = 45915696.

The previous prime is 47278481. The next prime is 47278493. The reversal of 47278489 is 98487274.

47278489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47278489 - 2³ = 47278481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47278481) 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 7 ways as a sum of consecutive naturals, for example, 30282 + ... + 31804.

It is an arithmetic number, because the mean of its divisors is an integer number (6080760).

Almost surely, 2^47278489 is an apocalyptic number.

It is an amenable number.

47278489 is a deficient number, since it is larger than the sum of its proper divisors (1367591).

47278489 is a wasteful number, since it uses less digits than its factorization.

47278489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399.

The product of its digits is 903168, while the sum is 49.

The square root of 47278489 is about 6875.9354999883. The cubic root of 47278489 is about 361.5939838038.

It can be divided in two parts, 472 and 78489, that added together give a square (78961 = 281²).

The spelling of 47278489 in words is "forty-seven million, two hundred seventy-eight thousand, four hundred eighty-nine".