117447487 has 2 divisors, whose sum is σ = 117447488. Its totient is φ = 117447486.

The previous prime is 117447479. The next prime is 117447511. The reversal of 117447487 is 784744711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117447487 - 2³ = 117447479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117447427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58723743 + 58723744.

It is an arithmetic number, because the mean of its divisors is an integer number (58723744).

Almost surely, 2^117447487 is an apocalyptic number.

117447487 is a deficient number, since it is larger than the sum of its proper divisors (1).

117447487 is an equidigital number, since it uses as much as digits as its factorization.

117447487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 175616, while the sum is 43.

The square root of 117447487 is about 10837.3191795757. The cubic root of 117447487 is about 489.7200775201.

The spelling of 117447487 in words is "one hundred seventeen million, four hundred forty-seven thousand, four hundred eighty-seven".