47147477 has 8 divisors (see below), whose sum is σ = 53761176. Its totient is φ = 40960512.

The previous prime is 47147467. The next prime is 47147489. The reversal of 47147477 is 77474174.

It can be written as a sum of positive squares in 4 ways, for example, as 784996 + 46362481 = 886^2 + 6809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47147477 - 2¹² = 47143381 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 (47147467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106448 + ... + 106889.

It is an arithmetic number, because the mean of its divisors is an integer number (6720147).

Almost surely, 2^47147477 is an apocalyptic number.

It is an amenable number.

47147477 is a deficient number, since it is larger than the sum of its proper divisors (6613699).

47147477 is a wasteful number, since it uses less digits than its factorization.

47147477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213367.

The product of its digits is 153664, while the sum is 41.

The square root of 47147477 is about 6866.4020418266. The cubic root of 47147477 is about 361.2596740743.

The spelling of 47147477 in words is "forty-seven million, one hundred forty-seven thousand, four hundred seventy-seven".