47656477 has 4 divisors (see below), whose sum is σ = 51988896. Its totient is φ = 43324060.

The previous prime is 47656471. The next prime is 47656489. The reversal of 47656477 is 77465674.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47656477 - 2¹¹ = 47654429 is a prime.

It is a super-2 number, since 2×47656477² = 4542279600103058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47656471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2166193 + ... + 2166214.

It is an arithmetic number, because the mean of its divisors is an integer number (12997224).

Almost surely, 2^47656477 is an apocalyptic number.

It is an amenable number.

47656477 is a deficient number, since it is larger than the sum of its proper divisors (4332419).

47656477 is a wasteful number, since it uses less digits than its factorization.

47656477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332418.

The product of its digits is 987840, while the sum is 46.

The square root of 47656477 is about 6903.3670770139. The cubic root of 47656477 is about 362.5550660699. Note that the first 3 decimals are identical.

It can be divided in two parts, 476 and 56477, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 47656477 in words is "forty-seven million, six hundred fifty-six thousand, four hundred seventy-seven".