29920351 has 2 divisors, whose sum is σ = 29920352. Its totient is φ = 29920350.

The previous prime is 29920349. The next prime is 29920361. The reversal of 29920351 is 15302992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29920351 - 2¹ = 29920349 is a prime.

Together with 29920349, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29920361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14960175 + 14960176.

It is an arithmetic number, because the mean of its divisors is an integer number (14960176).

Almost surely, 2^29920351 is an apocalyptic number.

29920351 is the 3460-th centered pentagonal number.

29920351 is a deficient number, since it is larger than the sum of its proper divisors (1).

29920351 is an equidigital number, since it uses as much as digits as its factorization.

29920351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 29920351 is about 5469.9498169544. The cubic root of 29920351 is about 310.4480202514.

The spelling of 29920351 in words is "twenty-nine million, nine hundred twenty thousand, three hundred fifty-one".