47878077 has 16 divisors (see below), whose sum is σ = 68923008. Its totient is φ = 29388480.

The previous prime is 47878073. The next prime is 47878079. The reversal of 47878077 is 77087874.

It is not a de Polignac number, because 47878077 - 2² = 47878073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47878073) 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 15 ways as a sum of consecutive naturals, for example, 16648 + ... + 19310.

It is an arithmetic number, because the mean of its divisors is an integer number (4307688).

Almost surely, 2^47878077 is an apocalyptic number.

It is an amenable number.

47878077 is a deficient number, since it is larger than the sum of its proper divisors (21044931).

47878077 is a wasteful number, since it uses less digits than its factorization.

47878077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140.

The product of its (nonzero) digits is 614656, while the sum is 48.

The square root of 47878077 is about 6919.3986010346. The cubic root of 47878077 is about 363.1161510084.

The spelling of 47878077 in words is "forty-seven million, eight hundred seventy-eight thousand, seventy-seven".