47726729 has 2 divisors, whose sum is σ = 47726730. Its totient is φ = 47726728.

The previous prime is 47726719. The next prime is 47726737. The reversal of 47726729 is 92762774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45630025 + 2096704 = 6755^2 + 1448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47726729 is a prime.

It is a super-2 number, since 2×47726729² = 4555681322078882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47726729.

It is not a weakly prime, because it can be changed into another prime (47726719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23863364 + 23863365.

It is an arithmetic number, because the mean of its divisors is an integer number (23863365).

Almost surely, 2^47726729 is an apocalyptic number.

It is an amenable number.

47726729 is a deficient number, since it is larger than the sum of its proper divisors (1).

47726729 is an equidigital number, since it uses as much as digits as its factorization.

47726729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 44.

The square root of 47726729 is about 6908.4534448746. The cubic root of 47726729 is about 362.7331301012.

The spelling of 47726729 in words is "forty-seven million, seven hundred twenty-six thousand, seven hundred twenty-nine".