47779946 has 16 divisors (see below), whose sum is σ = 76356000. Its totient is φ = 22358448.

The previous prime is 47779943. The next prime is 47779957. The reversal of 47779946 is 64997774.

It is not an unprimeable number, because it can be changed into a prime (47779943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4421 + ... + 10728.

It is an arithmetic number, because the mean of its divisors is an integer number (4772250).

Almost surely, 2^47779946 is an apocalyptic number.

47779946 is a deficient number, since it is larger than the sum of its proper divisors (28576054).

47779946 is a wasteful number, since it uses less digits than its factorization.

47779946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15253.

The product of its digits is 2667168, while the sum is 53.

The square root of 47779946 is about 6912.3039574371. The cubic root of 47779946 is about 362.8679001355.

The spelling of 47779946 in words is "forty-seven million, seven hundred seventy-nine thousand, nine hundred forty-six".