47758779 has 6 divisors (see below), whose sum is σ = 68984916. Its totient is φ = 31839180.

The previous prime is 47758771. The next prime is 47758813. The reversal of 47758779 is 97785774.

It is not a de Polignac number, because 47758779 - 2³ = 47758771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47758771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2653257 + ... + 2653274.

It is an arithmetic number, because the mean of its divisors is an integer number (11497486).

Almost surely, 2^47758779 is an apocalyptic number.

47758779 is a deficient number, since it is larger than the sum of its proper divisors (21226137).

47758779 is a wasteful number, since it uses less digits than its factorization.

47758779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306537 (or 5306534 counting only the distinct ones).

The product of its digits is 3457440, while the sum is 54.

The square root of 47758779 is about 6910.7726774942. The cubic root of 47758779 is about 362.8143075023.

The spelling of 47758779 in words is "forty-seven million, seven hundred fifty-eight thousand, seven hundred seventy-nine".