47197478 has 8 divisors (see below), whose sum is σ = 72523080. Its totient is φ = 23023120.

The previous prime is 47197477. The next prime is 47197483. The reversal of 47197478 is 87479174.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47197477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287708 + ... + 287871.

It is an arithmetic number, because the mean of its divisors is an integer number (9065385).

Almost surely, 2^47197478 is an apocalyptic number.

47197478 is a deficient number, since it is larger than the sum of its proper divisors (25325602).

47197478 is a wasteful number, since it uses less digits than its factorization.

47197478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575622.

The product of its digits is 395136, while the sum is 47.

The square root of 47197478 is about 6870.0420668290. The cubic root of 47197478 is about 361.3873370610.

The spelling of 47197478 in words is "forty-seven million, one hundred ninety-seven thousand, four hundred seventy-eight".