47967978 has 8 divisors (see below), whose sum is σ = 95935968. Its totient is φ = 15989324.

The previous prime is 47967977. The next prime is 47968009. The reversal of 47967978 is 87976974.

It is a sphenic number, since it is the product of 3 distinct primes.

47967978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (47967973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3997326 + ... + 3997337.

It is an arithmetic number, because the mean of its divisors is an integer number (11991996).

Almost surely, 2^47967978 is an apocalyptic number.

47967978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47967978 is a wasteful number, since it uses less digits than its factorization.

47967978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7994668.

The product of its digits is 5334336, while the sum is 57.

The square root of 47967978 is about 6925.8918559273. The cubic root of 47967978 is about 363.3432841498.

The spelling of 47967978 in words is "forty-seven million, nine hundred sixty-seven thousand, nine hundred seventy-eight".