47920591 has 4 divisors (see below), whose sum is σ = 47944512. Its totient is φ = 47896672.

The previous prime is 47920583. The next prime is 47920633. The reversal of 47920591 is 19502974.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47920591 - 2³ = 47920583 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 47920591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47920511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8650 + ... + 13063.

It is an arithmetic number, because the mean of its divisors is an integer number (11986128).

Almost surely, 2^47920591 is an apocalyptic number.

47920591 is a deficient number, since it is larger than the sum of its proper divisors (23921).

47920591 is a wasteful number, since it uses less digits than its factorization.

47920591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23920.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 47920591 is about 6922.4700071578. The cubic root of 47920591 is about 363.2235972130.

The spelling of 47920591 in words is "forty-seven million, nine hundred twenty thousand, five hundred ninety-one".