47779641 has 48 divisors (see below), whose sum is σ = 85647744. Its totient is φ = 24993792.

The previous prime is 47779631. The next prime is 47779651. The reversal of 47779641 is 14697774.

It is an interprime number because it is at equal distance from previous prime (47779631) and next prime (47779651).

It is not a de Polignac number, because 47779641 - 2⁶ = 47779577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47779621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 185785 + ... + 186041.

It is an arithmetic number, because the mean of its divisors is an integer number (1784328).

Almost surely, 2^47779641 is an apocalyptic number.

It is an amenable number.

47779641 is a deficient number, since it is larger than the sum of its proper divisors (37868103).

47779641 is a wasteful number, since it uses less digits than its factorization.

47779641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 507 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 47779641 is about 6912.2818952933. The cubic root of 47779641 is about 362.8671280197.

The spelling of 47779641 in words is "forty-seven million, seven hundred seventy-nine thousand, six hundred forty-one".