47920491 has 10 divisors (see below), whose sum is σ = 71585052. Its totient is φ = 31946940.

The previous prime is 47920471. The next prime is 47920493. The reversal of 47920491 is 19402974.

It is not a de Polignac number, because 47920491 - 2⁵ = 47920459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47920493) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 295725 + ... + 295886.

Almost surely, 2^47920491 is an apocalyptic number.

47920491 is a deficient number, since it is larger than the sum of its proper divisors (23664561).

47920491 is an equidigital number, since it uses as much as digits as its factorization.

47920491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591623 (or 591614 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 47920491 is about 6922.4627842987. The cubic root of 47920491 is about 363.2233445563.

It can be divided in two parts, 479 and 20491, that multiplied together give a palindrome (9815189).

The spelling of 47920491 in words is "forty-seven million, nine hundred twenty thousand, four hundred ninety-one".