47978357 has 8 divisors (see below), whose sum is σ = 55252032. Its totient is φ = 40809600.

The previous prime is 47978347. The next prime is 47978377. The reversal of 47978357 is 75387974.

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

It is a cyclic number.

It is not a de Polignac number, because 47978357 - 2⁴ = 47978341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47978317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25244 + ... + 27077.

It is an arithmetic number, because the mean of its divisors is an integer number (6906504).

Almost surely, 2^47978357 is an apocalyptic number.

It is an amenable number.

47978357 is a deficient number, since it is larger than the sum of its proper divisors (7273675).

47978357 is a wasteful number, since it uses less digits than its factorization.

47978357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52459.

The product of its digits is 1481760, while the sum is 50.

The square root of 47978357 is about 6926.6411051822. The cubic root of 47978357 is about 363.3694882145.

The spelling of 47978357 in words is "forty-seven million, nine hundred seventy-eight thousand, three hundred fifty-seven".