47777442 has 16 divisors (see below), whose sum is σ = 98850240. Its totient is φ = 15376592.

The previous prime is 47777437. The next prime is 47777461. The reversal of 47777442 is 24477774.

It is a junction number, because it is equal to n+sod(n) for n = 47777394 and 47777403.

It is an unprimeable number.

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, 137118 + ... + 137465.

It is an arithmetic number, because the mean of its divisors is an integer number (6178140).

Almost surely, 2^47777442 is an apocalyptic number.

47777442 is an abundant number, since it is smaller than the sum of its proper divisors (51072798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47777442 is a wasteful number, since it uses less digits than its factorization.

47777442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274617.

The product of its digits is 307328, while the sum is 42.

The square root of 47777442 is about 6912.1228287698. The cubic root of 47777442 is about 362.8615610946.

The spelling of 47777442 in words is "forty-seven million, seven hundred seventy-seven thousand, four hundred forty-two".