47872491 has 8 divisors (see below), whose sum is σ = 64599360. Its totient is φ = 31530312.

The previous prime is 47872483. The next prime is 47872529. The reversal of 47872491 is 19427874.

It is a happy number.

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

It is not a de Polignac number, because 47872491 - 2³ = 47872483 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (47872441) 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 7 ways as a sum of consecutive naturals, for example, 95881 + ... + 96378.

It is an arithmetic number, because the mean of its divisors is an integer number (8074920).

Almost surely, 2^47872491 is an apocalyptic number.

47872491 is a deficient number, since it is larger than the sum of its proper divisors (16726869).

47872491 is a wasteful number, since it uses less digits than its factorization.

47872491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192345.

The product of its digits is 112896, while the sum is 42.

The square root of 47872491 is about 6918.9949414637. The cubic root of 47872491 is about 363.1020287083.

The spelling of 47872491 in words is "forty-seven million, eight hundred seventy-two thousand, four hundred ninety-one".