47243477 has 4 divisors (see below), whose sum is σ = 47276736. Its totient is φ = 47210220.

The previous prime is 47243453. The next prime is 47243489. The reversal of 47243477 is 77434274.

It is a happy number.

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: 77434274 = 2 ⋅38717137.

It is a cyclic number.

It is not a de Polignac number, because 47243477 - 2²⁰ = 46194901 is a prime.

It is a super-2 number, since 2×47243477² = 4463892238099058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47243477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47243437) 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, 14399 + ... + 17372.

It is an arithmetic number, because the mean of its divisors is an integer number (11819184).

Almost surely, 2^47243477 is an apocalyptic number.

It is an amenable number.

47243477 is a deficient number, since it is larger than the sum of its proper divisors (33259).

47243477 is a wasteful number, since it uses less digits than its factorization.

47243477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33258.

The product of its digits is 131712, while the sum is 38.

The square root of 47243477 is about 6873.3890476242. The cubic root of 47243477 is about 361.5047025030.

The spelling of 47243477 in words is "forty-seven million, two hundred forty-three thousand, four hundred seventy-seven".