29200921 has 2 divisors, whose sum is σ = 29200922. Its totient is φ = 29200920.

The previous prime is 29200909. The next prime is 29200931. The reversal of 29200921 is 12900292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26832400 + 2368521 = 5180^2 + 1539^2 .

It is a cyclic number.

It is not a de Polignac number, because 29200921 - 2⁵ = 29200889 is a prime.

It is not a weakly prime, because it can be changed into another prime (29200931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14600460 + 14600461.

It is an arithmetic number, because the mean of its divisors is an integer number (14600461).

Almost surely, 2^29200921 is an apocalyptic number.

It is an amenable number.

29200921 is a deficient number, since it is larger than the sum of its proper divisors (1).

29200921 is an equidigital number, since it uses as much as digits as its factorization.

29200921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 29200921 is about 5403.7876531189. The cubic root of 29200921 is about 307.9395823753.

The spelling of 29200921 in words is "twenty-nine million, two hundred thousand, nine hundred twenty-one".