47447477 has 16 divisors (see below), whose sum is σ = 59750784. Its totient is φ = 36600000.

The previous prime is 47447467. The next prime is 47447483. The reversal of 47447477 is 77474474.

It is a cyclic number.

It is not a de Polignac number, because 47447477 - 2²⁰ = 46398901 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 (47447417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4727 + ... + 10827.

It is an arithmetic number, because the mean of its divisors is an integer number (3734424).

Almost surely, 2^47447477 is an apocalyptic number.

It is an amenable number.

47447477 is a deficient number, since it is larger than the sum of its proper divisors (12303307).

47447477 is a wasteful number, since it uses less digits than its factorization.

47447477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6220.

The product of its digits is 614656, while the sum is 44.

The square root of 47447477 is about 6888.2129032137. The cubic root of 47447477 is about 362.0242879220.

It can be divided in two parts, 4744 and 7477, that added together give a palindrome (12221).

The spelling of 47447477 in words is "forty-seven million, four hundred forty-seven thousand, four hundred seventy-seven".