47089387 has 4 divisors (see below), whose sum is σ = 47977920. Its totient is φ = 46200856.

The previous prime is 47089379. The next prime is 47089411. The reversal of 47089387 is 78398074.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78398074 = 2 ⋅39199037.

It is a cyclic number.

It is not a de Polignac number, because 47089387 - 2³ = 47089379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47089327) 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, 444187 + ... + 444292.

It is an arithmetic number, because the mean of its divisors is an integer number (11994480).

Almost surely, 2^47089387 is an apocalyptic number.

47089387 is a deficient number, since it is larger than the sum of its proper divisors (888533).

47089387 is an equidigital number, since it uses as much as digits as its factorization.

47089387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888532.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 47089387 is about 6862.1707206976. The cubic root of 47089387 is about 361.1112447880. Note that the first 3 decimals are identical.

The spelling of 47089387 in words is "forty-seven million, eighty-nine thousand, three hundred eighty-seven".