47998487 has 2 divisors, whose sum is σ = 47998488. Its totient is φ = 47998486.

The previous prime is 47998481. The next prime is 47998499. The reversal of 47998487 is 78489974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47998487 - 2⁴ = 47998471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47998481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23999243 + 23999244.

It is an arithmetic number, because the mean of its divisors is an integer number (23999244).

Almost surely, 2^47998487 is an apocalyptic number.

47998487 is a deficient number, since it is larger than the sum of its proper divisors (1).

47998487 is an equidigital number, since it uses as much as digits as its factorization.

47998487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The square root of 47998487 is about 6928.0940380454. The cubic root of 47998487 is about 363.4203000493.

The spelling of 47998487 in words is "forty-seven million, nine hundred ninety-eight thousand, four hundred eighty-seven".