47608978 has 4 divisors (see below), whose sum is σ = 71413470. Its totient is φ = 23804488.

The previous prime is 47608961. The next prime is 47608997. The reversal of 47608978 is 87980674.

47608978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 47375689 + 233289 = 6883^2 + 483^2 .

It is a super-2 number, since 2×47608978² = 4533229572408968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11902243 + ... + 11902246.

Almost surely, 2^47608978 is an apocalyptic number.

47608978 is a deficient number, since it is larger than the sum of its proper divisors (23804492).

47608978 is a wasteful number, since it uses less digits than its factorization.

47608978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23804491.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 47608978 is about 6899.9259416315. The cubic root of 47608978 is about 362.4345736856.

The spelling of 47608978 in words is "forty-seven million, six hundred eight thousand, nine hundred seventy-eight".