47779321 has 16 divisors (see below), whose sum is σ = 51163200. Its totient is φ = 44549568.

The previous prime is 47779301. The next prime is 47779337. The reversal of 47779321 is 12397774.

It is a cyclic number.

It is not a de Polignac number, because 47779321 - 2¹⁵ = 47746553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47779301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93615 + ... + 94123.

It is an arithmetic number, because the mean of its divisors is an integer number (3197700).

Almost surely, 2^47779321 is an apocalyptic number.

It is an amenable number.

47779321 is a deficient number, since it is larger than the sum of its proper divisors (3383879).

47779321 is a wasteful number, since it uses less digits than its factorization.

47779321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its digits is 74088, while the sum is 40.

The square root of 47779321 is about 6912.2587480505. The cubic root of 47779321 is about 362.8663179275.

The spelling of 47779321 in words is "forty-seven million, seven hundred seventy-nine thousand, three hundred twenty-one".