47779965 has 96 divisors (see below), whose sum is σ = 94348800. Its totient is φ = 22256640.

The previous prime is 47779957. The next prime is 47779973. The reversal of 47779965 is 56997774.

It is a happy number.

47779965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47779957) and next prime (47779973).

It is not a de Polignac number, because 47779965 - 2³ = 47779957 is a prime.

Its product of digits (3333960) is a multiple of the sum of its prime factors (147).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 1016572 + ... + 1016618.

It is an arithmetic number, because the mean of its divisors is an integer number (982800).

Almost surely, 2^47779965 is an apocalyptic number.

47779965 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47779965 is a deficient number, since it is larger than the sum of its proper divisors (46568835).

47779965 is a wasteful number, since it uses less digits than its factorization.

47779965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 144 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 47779965 is about 6912.3053317978. The cubic root of 47779965 is about 362.8679482344.

The spelling of 47779965 in words is "forty-seven million, seven hundred seventy-nine thousand, nine hundred sixty-five".