10821929 has 2 divisors, whose sum is σ = 10821930. Its totient is φ = 10821928.

The previous prime is 10821919. The next prime is 10821931. The reversal of 10821929 is 92912801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9909904 + 912025 = 3148^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 10821929 - 2⁴ = 10821913 is a prime.

It is a super-2 number, since 2×10821929² = 234228294562082, which contains 22 as substring.

Together with 10821931, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10821895 and 10821904.

It is not a weakly prime, because it can be changed into another prime (10821919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5410964 + 5410965.

It is an arithmetic number, because the mean of its divisors is an integer number (5410965).

Almost surely, 2^10821929 is an apocalyptic number.

It is an amenable number.

10821929 is a deficient number, since it is larger than the sum of its proper divisors (1).

10821929 is an equidigital number, since it uses as much as digits as its factorization.

10821929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 10821929 is about 3289.6700442446. The cubic root of 10821929 is about 221.1913945664.

The spelling of 10821929 in words is "ten million, eight hundred twenty-one thousand, nine hundred twenty-nine".