47729873 has 4 divisors (see below), whose sum is σ = 48202548. Its totient is φ = 47257200.

The previous prime is 47729867. The next prime is 47729893. The reversal of 47729873 is 37892774.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45589504 + 2140369 = 6752^2 + 1463^2 .

It is a cyclic number.

It is not a de Polignac number, because 47729873 - 2¹⁴ = 47713489 is a prime.

It is a super-2 number, since 2×47729873² = 4556281553192258, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47729893) 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, 236186 + ... + 236387.

It is an arithmetic number, because the mean of its divisors is an integer number (12050637).

Almost surely, 2^47729873 is an apocalyptic number.

It is an amenable number.

47729873 is a deficient number, since it is larger than the sum of its proper divisors (472675).

47729873 is a wasteful number, since it uses less digits than its factorization.

47729873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472674.

The product of its digits is 592704, while the sum is 47.

The square root of 47729873 is about 6908.6809884377. The cubic root of 47729873 is about 362.7410949457.

The spelling of 47729873 in words is "forty-seven million, seven hundred twenty-nine thousand, eight hundred seventy-three".