47779951 has 4 divisors (see below), whose sum is σ = 47856304. Its totient is φ = 47703600.

The previous prime is 47779943. The next prime is 47779957. The reversal of 47779951 is 15997774.

47779951 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 is not a de Polignac number, because 47779951 - 2³ = 47779943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47779895 and 47779904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47779957) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 37230 + ... + 38491.

It is an arithmetic number, because the mean of its divisors is an integer number (11964076).

Almost surely, 2^47779951 is an apocalyptic number.

47779951 is a deficient number, since it is larger than the sum of its proper divisors (76353).

47779951 is an equidigital number, since it uses as much as digits as its factorization.

47779951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76352.

The product of its digits is 555660, while the sum is 49.

The square root of 47779951 is about 6912.3043191110. The cubic root of 47779951 is about 362.8679127931.

The spelling of 47779951 in words is "forty-seven million, seven hundred seventy-nine thousand, nine hundred fifty-one".