118471947 has 12 divisors (see below), whose sum is σ = 173628840. Its totient is φ = 71800960.

The previous prime is 118471937. The next prime is 118471979. The reversal of 118471947 is 749174811.

It is not a de Polignac number, because 118471947 - 2⁶ = 118471883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118471899 and 118471908.

It is not an unprimeable number, because it can be changed into a prime (118471937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162822 + ... + 163547.

It is an arithmetic number, because the mean of its divisors is an integer number (14469070).

Almost surely, 2^118471947 is an apocalyptic number.

118471947 is a deficient number, since it is larger than the sum of its proper divisors (55156893).

118471947 is a wasteful number, since it uses less digits than its factorization.

118471947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326394 (or 326383 counting only the distinct ones).

The product of its digits is 56448, while the sum is 42.

The square root of 118471947 is about 10884.4819353059. The cubic root of 118471947 is about 491.1398522867.

The spelling of 118471947 in words is "one hundred eighteen million, four hundred seventy-one thousand, nine hundred forty-seven".