118447477 has 2 divisors, whose sum is σ = 118447478. Its totient is φ = 118447476.

The previous prime is 118447457. The next prime is 118447487. The reversal of 118447477 is 774744811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82555396 + 35892081 = 9086^2 + 5991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118447477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118447457) 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, 59223738 + 59223739.

It is an arithmetic number, because the mean of its divisors is an integer number (59223739).

Almost surely, 2^118447477 is an apocalyptic number.

It is an amenable number.

118447477 is a deficient number, since it is larger than the sum of its proper divisors (1).

118447477 is an equidigital number, since it uses as much as digits as its factorization.

118447477 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 118447477 is about 10883.3577998704. The cubic root of 118447477 is about 491.1060355055.

It can be divided in two parts, 11844 and 7477, that added together give a square (19321 = 139²).

The spelling of 118447477 in words is "one hundred eighteen million, four hundred forty-seven thousand, four hundred seventy-seven".