829919797 has 4 divisors (see below), whose sum is σ = 948479776. Its totient is φ = 711359820.

The previous prime is 829919771. The next prime is 829919801. The reversal of 829919797 is 797919928.

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 829919797 - 2⁷ = 829919669 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 (829910797) 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, 59279979 + ... + 59279992.

It is an arithmetic number, because the mean of its divisors is an integer number (237119944).

Almost surely, 2^829919797 is an apocalyptic number.

It is an amenable number.

829919797 is a deficient number, since it is larger than the sum of its proper divisors (118559979).

829919797 is a wasteful number, since it uses less digits than its factorization.

829919797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118559978.

The product of its digits is 5143824, while the sum is 61.

The square root of 829919797 is about 28808.3286047629. The cubic root of 829919797 is about 939.7493661804.

The spelling of 829919797 in words is "eight hundred twenty-nine million, nine hundred nineteen thousand, seven hundred ninety-seven".