47748879 has 8 divisors (see below), whose sum is σ = 70739120. Its totient is φ = 31832568.

The previous prime is 47748871. The next prime is 47748893. The reversal of 47748879 is 97884774.

It is not a de Polignac number, because 47748879 - 2³ = 47748871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47748871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884212 + ... + 884265.

It is an arithmetic number, because the mean of its divisors is an integer number (8842390).

Almost surely, 2^47748879 is an apocalyptic number.

47748879 is a deficient number, since it is larger than the sum of its proper divisors (22990241).

47748879 is a wasteful number, since it uses less digits than its factorization.

47748879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768486 (or 1768480 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 47748879 is about 6910.0563673533. The cubic root of 47748879 is about 362.7892363012.

The spelling of 47748879 in words is "forty-seven million, seven hundred forty-eight thousand, eight hundred seventy-nine".