47042477 has 4 divisors (see below), whose sum is σ = 47237916. Its totient is φ = 46847040.

The previous prime is 47042447. The next prime is 47042497. The reversal of 47042477 is 77424074.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33396841 + 13645636 = 5779^2 + 3694^2 .

It is a cyclic number.

It is not a de Polignac number, because 47042477 - 2²⁰ = 45993901 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 (47042447) 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 3 ways as a sum of consecutive naturals, for example, 97358 + ... + 97839.

It is an arithmetic number, because the mean of its divisors is an integer number (11809479).

Almost surely, 2^47042477 is an apocalyptic number.

It is an amenable number.

47042477 is a deficient number, since it is larger than the sum of its proper divisors (195439).

47042477 is a wasteful number, since it uses less digits than its factorization.

47042477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195438.

The product of its (nonzero) digits is 43904, while the sum is 35.

The square root of 47042477 is about 6858.7518543828. The cubic root of 47042477 is about 360.9912930837.

The spelling of 47042477 in words is "forty-seven million, forty-two thousand, four hundred seventy-seven".