47729315 has 4 divisors (see below), whose sum is σ = 57275184. Its totient is φ = 38183448.

The previous prime is 47729303. The next prime is 47729317. The reversal of 47729315 is 51392774.

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

It is a cyclic number.

It is not a de Polignac number, because 47729315 - 2¹² = 47725219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47729317) 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, 4772927 + ... + 4772936.

It is an arithmetic number, because the mean of its divisors is an integer number (14318796).

Almost surely, 2^47729315 is an apocalyptic number.

47729315 is a deficient number, since it is larger than the sum of its proper divisors (9545869).

47729315 is an equidigital number, since it uses as much as digits as its factorization.

47729315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9545868.

The product of its digits is 52920, while the sum is 38.

The square root of 47729315 is about 6908.6406043447. The cubic root of 47729315 is about 362.7396813633.

It can be divided in two parts, 477 and 29315, that added together give a palindrome (29792).

The spelling of 47729315 in words is "forty-seven million, seven hundred twenty-nine thousand, three hundred fifteen".