920761729 has 4 divisors (see below), whose sum is σ = 936367920. Its totient is φ = 905155540.

The previous prime is 920761727. The next prime is 920761747. The reversal of 920761729 is 927167029.

920761729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 920761729 - 2¹ = 920761727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920761727) 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, 7803007 + ... + 7803124.

It is an arithmetic number, because the mean of its divisors is an integer number (234091980).

Almost surely, 2^920761729 is an apocalyptic number.

It is an amenable number.

920761729 is a deficient number, since it is larger than the sum of its proper divisors (15606191).

920761729 is a wasteful number, since it uses less digits than its factorization.

920761729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15606190.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 920761729 is about 30344.0559088596. The cubic root of 920761729 is about 972.8571757630.

The spelling of 920761729 in words is "nine hundred twenty million, seven hundred sixty-one thousand, seven hundred twenty-nine".