47729117 has 4 divisors (see below), whose sum is σ = 49804320. Its totient is φ = 45653916.

The previous prime is 47729113. The next prime is 47729131. The reversal of 47729117 is 71192774.

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.

It is a cyclic number.

It is not a de Polignac number, because 47729117 - 2² = 47729113 is a prime.

It is a super-3 number, since 3×47729117³ (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 (47729113) 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, 1037567 + ... + 1037612.

It is an arithmetic number, because the mean of its divisors is an integer number (12451080).

Almost surely, 2^47729117 is an apocalyptic number.

It is an amenable number.

47729117 is a deficient number, since it is larger than the sum of its proper divisors (2075203).

47729117 is a wasteful number, since it uses less digits than its factorization.

47729117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075202.

The product of its digits is 24696, while the sum is 38.

The square root of 47729117 is about 6908.6262744485. The cubic root of 47729117 is about 362.7391797669.

The spelling of 47729117 in words is "forty-seven million, seven hundred twenty-nine thousand, one hundred seventeen".