47825779 has 4 divisors (see below), whose sum is σ = 48003840. Its totient is φ = 47647720.

The previous prime is 47825773. The next prime is 47825801. The reversal of 47825779 is 97752874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97752874 = 2 ⋅48876437.

It is a cyclic number.

It is not a de Polignac number, because 47825779 - 2¹⁹ = 47301491 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47825773) 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, 88627 + ... + 89164.

It is an arithmetic number, because the mean of its divisors is an integer number (12000960).

Almost surely, 2^47825779 is an apocalyptic number.

47825779 is a deficient number, since it is larger than the sum of its proper divisors (178061).

47825779 is a wasteful number, since it uses less digits than its factorization.

47825779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178060.

The product of its digits is 987840, while the sum is 49.

The square root of 47825779 is about 6915.6184828257. The cubic root of 47825779 is about 362.9838902862.

The spelling of 47825779 in words is "forty-seven million, eight hundred twenty-five thousand, seven hundred seventy-nine".