47387471 has 4 divisors (see below), whose sum is σ = 47402472. Its totient is φ = 47372472.

The previous prime is 47387453. The next prime is 47387531. The reversal of 47387471 is 17478374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17478374 = 2 ⋅8739187.

It is a cyclic number.

It is not a de Polignac number, because 47387471 - 2²² = 43193167 is a prime.

It is a super-3 number, since 3×47387471³ (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 (47387401) 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, 716 + ... + 9761.

It is an arithmetic number, because the mean of its divisors is an integer number (11850618).

Almost surely, 2^47387471 is an apocalyptic number.

47387471 is a deficient number, since it is larger than the sum of its proper divisors (15001).

47387471 is a wasteful number, since it uses less digits than its factorization.

47387471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15000.

The product of its digits is 131712, while the sum is 41.

The square root of 47387471 is about 6883.8558235919. The cubic root of 47387471 is about 361.8716082639.

The spelling of 47387471 in words is "forty-seven million, three hundred eighty-seven thousand, four hundred seventy-one".