47899487 has 2 divisors, whose sum is σ = 47899488. Its totient is φ = 47899486.

The previous prime is 47899459. The next prime is 47899493. The reversal of 47899487 is 78499874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47899487 - 2¹⁴ = 47883103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47899427) 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 as a sum of consecutive naturals, namely, 23949743 + 23949744.

It is an arithmetic number, because the mean of its divisors is an integer number (23949744).

Almost surely, 2^47899487 is an apocalyptic number.

47899487 is a deficient number, since it is larger than the sum of its proper divisors (1).

47899487 is an equidigital number, since it uses as much as digits as its factorization.

47899487 is an odious number, because the sum of its binary digits is odd.

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

The square root of 47899487 is about 6920.9455278885. The cubic root of 47899487 is about 363.1702687364.

The spelling of 47899487 in words is "forty-seven million, eight hundred ninety-nine thousand, four hundred eighty-seven".