47961886 has 12 divisors (see below), whose sum is σ = 83688768. Its totient is φ = 20555052.

The previous prime is 47961869. The next prime is 47961887. The reversal of 47961886 is 68816974.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47961887) 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, 244606 + ... + 244801.

It is an arithmetic number, because the mean of its divisors is an integer number (6974064).

Almost surely, 2^47961886 is an apocalyptic number.

47961886 is a deficient number, since it is larger than the sum of its proper divisors (35726882).

47961886 is a wasteful number, since it uses less digits than its factorization.

47961886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489423 (or 489416 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 47961886 is about 6925.4520430077. The cubic root of 47961886 is about 363.3279017976.

The spelling of 47961886 in words is "forty-seven million, nine hundred sixty-one thousand, eight hundred eighty-six".