29192921 has 2 divisors, whose sum is σ = 29192922. Its totient is φ = 29192920.

The previous prime is 29192909. The next prime is 29192929. The reversal of 29192921 is 12929192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14714896 + 14478025 = 3836^2 + 3805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29192921 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (29192929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14596460 + 14596461.

It is an arithmetic number, because the mean of its divisors is an integer number (14596461).

Almost surely, 2^29192921 is an apocalyptic number.

It is an amenable number.

29192921 is a deficient number, since it is larger than the sum of its proper divisors (1).

29192921 is an equidigital number, since it uses as much as digits as its factorization.

29192921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 35.

The square root of 29192921 is about 5403.0473808768. The cubic root of 29192921 is about 307.9114583575.

The spelling of 29192921 in words is "twenty-nine million, one hundred ninety-two thousand, nine hundred twenty-one".