47449477 has 2 divisors, whose sum is σ = 47449478. Its totient is φ = 47449476.

The previous prime is 47449459. The next prime is 47449531. The reversal of 47449477 is 77494474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36893476 + 10556001 = 6074^2 + 3249^2 .

It is a cyclic number.

It is not a de Polignac number, because 47449477 - 2⁷ = 47449349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47449427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23724738 + 23724739.

It is an arithmetic number, because the mean of its divisors is an integer number (23724739).

Almost surely, 2^47449477 is an apocalyptic number.

It is an amenable number.

47449477 is a deficient number, since it is larger than the sum of its proper divisors (1).

47449477 is an equidigital number, since it uses as much as digits as its factorization.

47449477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 46.

The square root of 47449477 is about 6888.3580772199. The cubic root of 47449477 is about 362.0293745177.

The spelling of 47449477 in words is "forty-seven million, four hundred forty-nine thousand, four hundred seventy-seven".