47936729 has 4 divisors (see below), whose sum is σ = 47975376. Its totient is φ = 47898084.

The previous prime is 47936723. The next prime is 47936731. The reversal of 47936729 is 92763974.

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: 92763974 = 2 ⋅46381987.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47936729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47936723) 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, 17399 + ... + 19964.

It is an arithmetic number, because the mean of its divisors is an integer number (11993844).

Almost surely, 2^47936729 is an apocalyptic number.

It is an amenable number.

47936729 is a deficient number, since it is larger than the sum of its proper divisors (38647).

47936729 is a wasteful number, since it uses less digits than its factorization.

47936729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38646.

The product of its digits is 571536, while the sum is 47.

The square root of 47936729 is about 6923.6355334463. The cubic root of 47936729 is about 363.2643663577.

The spelling of 47936729 in words is "forty-seven million, nine hundred thirty-six thousand, seven hundred twenty-nine".