820429297 has 8 divisors (see below), whose sum is σ = 860540544. Its totient is φ = 780688128.

The previous prime is 820429283. The next prime is 820429331. The reversal of 820429297 is 792924028.

820429297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 820429297 - 2²⁷ = 686211569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820429217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87973 + ... + 96850.

It is an arithmetic number, because the mean of its divisors is an integer number (107567568).

Almost surely, 2^820429297 is an apocalyptic number.

It is an amenable number.

820429297 is a deficient number, since it is larger than the sum of its proper divisors (40111247).

820429297 is a wasteful number, since it uses less digits than its factorization.

820429297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185039.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 820429297 is about 28643.1369964953. The cubic root of 820429297 is about 936.1534743741.

The spelling of 820429297 in words is "eight hundred twenty million, four hundred twenty-nine thousand, two hundred ninety-seven".