29240621 has 2 divisors, whose sum is σ = 29240622. Its totient is φ = 29240620.

The previous prime is 29240599. The next prime is 29240647. The reversal of 29240621 is 12604292.

It is an a-pointer prime, because the next prime (29240647) can be obtained adding 29240621 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27678121 + 1562500 = 5261^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 29240621 - 2⁶ = 29240557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29240021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14620310 + 14620311.

It is an arithmetic number, because the mean of its divisors is an integer number (14620311).

Almost surely, 2^29240621 is an apocalyptic number.

It is an amenable number.

29240621 is a deficient number, since it is larger than the sum of its proper divisors (1).

29240621 is an equidigital number, since it uses as much as digits as its factorization.

29240621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 29240621 is about 5407.4597548202. The cubic root of 29240621 is about 308.0790718724.

The spelling of 29240621 in words is "twenty-nine million, two hundred forty thousand, six hundred twenty-one".