829140447 has 8 divisors (see below), whose sum is σ = 1105674880. Its totient is φ = 552683160.

The previous prime is 829140401. The next prime is 829140451. The reversal of 829140447 is 744041928.

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

It is not a de Polignac number, because 829140447 - 2¹⁴ = 829124063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (829140457) 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, 14004 + ... + 43062.

It is an arithmetic number, because the mean of its divisors is an integer number (138209360).

Almost surely, 2^829140447 is an apocalyptic number.

829140447 is a deficient number, since it is larger than the sum of its proper divisors (276534433).

829140447 is a wasteful number, since it uses less digits than its factorization.

829140447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38573.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 829140447 is about 28794.7989574506. The cubic root of 829140447 is about 939.4551116245.

The spelling of 829140447 in words is "eight hundred twenty-nine million, one hundred forty thousand, four hundred forty-seven".