29349721 has 2 divisors, whose sum is σ = 29349722. Its totient is φ = 29349720.

The previous prime is 29349709. The next prime is 29349731. The reversal of 29349721 is 12794392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25644096 + 3705625 = 5064^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 29349721 - 2⁵ = 29349689 is a prime.

It is a super-2 number, since 2×29349721² = 1722812245555682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29349731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14674860 + 14674861.

It is an arithmetic number, because the mean of its divisors is an integer number (14674861).

Almost surely, 2^29349721 is an apocalyptic number.

It is an amenable number.

29349721 is a deficient number, since it is larger than the sum of its proper divisors (1).

29349721 is an equidigital number, since it uses as much as digits as its factorization.

29349721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 29349721 is about 5417.5382785911. The cubic root of 29349721 is about 308.4617553834.

The spelling of 29349721 in words is "twenty-nine million, three hundred forty-nine thousand, seven hundred twenty-one".