47491118 has 4 divisors (see below), whose sum is σ = 71236680. Its totient is φ = 23745558.

The previous prime is 47491117. The next prime is 47491121. The reversal of 47491118 is 81119474.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47491111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11872778 + ... + 11872781.

It is an arithmetic number, because the mean of its divisors is an integer number (17809170).

Almost surely, 2^47491118 is an apocalyptic number.

47491118 is a deficient number, since it is larger than the sum of its proper divisors (23745562).

47491118 is a wasteful number, since it uses less digits than its factorization.

47491118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23745561.

The product of its digits is 8064, while the sum is 35.

The square root of 47491118 is about 6891.3799779144. The cubic root of 47491118 is about 362.1352475314.

The spelling of 47491118 in words is "forty-seven million, four hundred ninety-one thousand, one hundred eighteen".