29949421 has 2 divisors, whose sum is σ = 29949422. Its totient is φ = 29949420.

The previous prime is 29949383. The next prime is 29949449. The reversal of 29949421 is 12494992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19900521 + 10048900 = 4461^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 29949421 - 2¹⁹ = 29425133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29949221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14974710 + 14974711.

It is an arithmetic number, because the mean of its divisors is an integer number (14974711).

Almost surely, 2^29949421 is an apocalyptic number.

It is an amenable number.

29949421 is a deficient number, since it is larger than the sum of its proper divisors (1).

29949421 is an equidigital number, since it uses as much as digits as its factorization.

29949421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 29949421 is about 5472.6064174212. The cubic root of 29949421 is about 310.5485293528.

The spelling of 29949421 in words is "twenty-nine million, nine hundred forty-nine thousand, four hundred twenty-one".