47040729 has 4 divisors (see below), whose sum is σ = 62720976. Its totient is φ = 31360484.

The previous prime is 47040709. The next prime is 47040739. The reversal of 47040729 is 92704074.

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 47040729 - 2⁷ = 47040601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47040729.

It is not an unprimeable number, because it can be changed into a prime (47040709) 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, 7840119 + ... + 7840124.

It is an arithmetic number, because the mean of its divisors is an integer number (15680244).

Almost surely, 2^47040729 is an apocalyptic number.

It is an amenable number.

47040729 is a deficient number, since it is larger than the sum of its proper divisors (15680247).

47040729 is a wasteful number, since it uses less digits than its factorization.

47040729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15680246.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 47040729 is about 6858.6244247662. The cubic root of 47040729 is about 360.9868218014.

The spelling of 47040729 in words is "forty-seven million, forty thousand, seven hundred twenty-nine".