47803918 has 4 divisors (see below), whose sum is σ = 71705880. Its totient is φ = 23901958.

The previous prime is 47803883. The next prime is 47803937. The reversal of 47803918 is 81930874.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11950978 + ... + 11950981.

It is an arithmetic number, because the mean of its divisors is an integer number (17926470).

Almost surely, 2^47803918 is an apocalyptic number.

47803918 is a deficient number, since it is larger than the sum of its proper divisors (23901962).

47803918 is a wasteful number, since it uses less digits than its factorization.

47803918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23901961.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 47803918 is about 6914.0377493907. The cubic root of 47803918 is about 362.9285756258.

The spelling of 47803918 in words is "forty-seven million, eight hundred three thousand, nine hundred eighteen".