19914929 has 2 divisors, whose sum is σ = 19914930. Its totient is φ = 19914928.

The previous prime is 19914901. The next prime is 19914931. The reversal of 19914929 is 92941991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16120225 + 3794704 = 4015^2 + 1948^2 .

It is a cyclic number.

It is not a de Polignac number, because 19914929 - 2¹² = 19910833 is a prime.

Together with 19914931, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19914929.

It is not a weakly prime, because it can be changed into another prime (19914949) 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, 9957464 + 9957465.

It is an arithmetic number, because the mean of its divisors is an integer number (9957465).

Almost surely, 2^19914929 is an apocalyptic number.

It is an amenable number.

19914929 is a deficient number, since it is larger than the sum of its proper divisors (1).

19914929 is an equidigital number, since it uses as much as digits as its factorization.

19914929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 44.

The square root of 19914929 is about 4462.6145923662. The cubic root of 19914929 is about 271.0563509856.

The spelling of 19914929 in words is "nineteen million, nine hundred fourteen thousand, nine hundred twenty-nine".