29221039 has 2 divisors, whose sum is σ = 29221040. Its totient is φ = 29221038.

The previous prime is 29221021. The next prime is 29221043. The reversal of 29221039 is 93012292.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29221039 - 2¹⁷ = 29089967 is a prime.

It is equal to p_1812484 and since 29221039 and 1812484 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 29220998 and 29221016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29221019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14610519 + 14610520.

It is an arithmetic number, because the mean of its divisors is an integer number (14610520).

Almost surely, 2^29221039 is an apocalyptic number.

29221039 is a deficient number, since it is larger than the sum of its proper divisors (1).

29221039 is an equidigital number, since it uses as much as digits as its factorization.

29221039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 29221039 is about 5405.6488047227. The cubic root of 29221039 is about 308.0102845557.

The spelling of 29221039 in words is "twenty-nine million, two hundred twenty-one thousand, thirty-nine".