47923477 has 4 divisors (see below), whose sum is σ = 54769696. Its totient is φ = 41077260.

The previous prime is 47923441. The next prime is 47923483. The reversal of 47923477 is 77432974.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77432974 = 2 ⋅38716487.

It is not a de Polignac number, because 47923477 - 2¹¹ = 47921429 is a prime.

It is a super-3 number, since 3×47923477³ (a number of 24 digits) contains 333 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 (47923417) 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, 3423099 + ... + 3423112.

It is an arithmetic number, because the mean of its divisors is an integer number (13692424).

Almost surely, 2^47923477 is an apocalyptic number.

It is an amenable number.

47923477 is a deficient number, since it is larger than the sum of its proper divisors (6846219).

47923477 is an equidigital number, since it uses as much as digits as its factorization.

47923477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6846218.

The product of its digits is 296352, while the sum is 43.

The square root of 47923477 is about 6922.6784556268. The cubic root of 47923477 is about 363.2308887359.

It can be divided in two parts, 47923 and 477, that added together give a square (48400 = 220²).

The spelling of 47923477 in words is "forty-seven million, nine hundred twenty-three thousand, four hundred seventy-seven".