47119978 has 4 divisors (see below), whose sum is σ = 70679970. Its totient is φ = 23559988.

The previous prime is 47119951. The next prime is 47120053. The reversal of 47119978 is 87991174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87991174 = 2 ⋅43995587.

It can be written as a sum of positive squares in only one way, i.e., 44582329 + 2537649 = 6677^2 + 1593^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11779993 + ... + 11779996.

Almost surely, 2^47119978 is an apocalyptic number.

47119978 is a deficient number, since it is larger than the sum of its proper divisors (23559992).

47119978 is a wasteful number, since it uses less digits than its factorization.

47119978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23559991.

The product of its digits is 127008, while the sum is 46.

The square root of 47119978 is about 6864.3993182215. The cubic root of 47119978 is about 361.1894249154.

It can be divided in two parts, 471 and 19978, that added together give a square (20449 = 143²).

The spelling of 47119978 in words is "forty-seven million, one hundred nineteen thousand, nine hundred seventy-eight".