47697787 has 2 divisors, whose sum is σ = 47697788. Its totient is φ = 47697786.

The previous prime is 47697739. The next prime is 47697803. The reversal of 47697787 is 78779674.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47697787 - 2⁷ = 47697659 is a prime.

It is not a weakly prime, because it can be changed into another prime (47697887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23848893 + 23848894.

It is an arithmetic number, because the mean of its divisors is an integer number (23848894).

Almost surely, 2^47697787 is an apocalyptic number.

47697787 is a deficient number, since it is larger than the sum of its proper divisors (1).

47697787 is an equidigital number, since it uses as much as digits as its factorization.

47697787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4148928, while the sum is 55.

The square root of 47697787 is about 6906.3584471123. The cubic root of 47697787 is about 362.6597935226.

It can be divided in two parts, 47697 and 787, that added together give a palindrome (48484).

The spelling of 47697787 in words is "forty-seven million, six hundred ninety-seven thousand, seven hundred eighty-seven".