2821929797 has 2 divisors, whose sum is σ = 2821929798. Its totient is φ = 2821929796.

The previous prime is 2821929793. The next prime is 2821929833. The reversal of 2821929797 is 7979291282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2818123396 + 3806401 = 53086^2 + 1951^2 .

It is a cyclic number.

It is not a de Polignac number, because 2821929797 - 2² = 2821929793 is a prime.

It is a super-2 number, since 2×2821929797² = 15926575558392922418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2821929791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410964898 + 1410964899.

It is an arithmetic number, because the mean of its divisors is an integer number (1410964899).

Almost surely, 2^2821929797 is an apocalyptic number.

It is an amenable number.

2821929797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821929797 is an equidigital number, since it uses as much as digits as its factorization.

2821929797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 56.

The square root of 2821929797 is about 53121.8391718510. The cubic root of 2821929797 is about 1413.1298441694.

The spelling of 2821929797 in words is "two billion, eight hundred twenty-one million, nine hundred twenty-nine thousand, seven hundred ninety-seven".