19700429 has 4 divisors (see below), whose sum is σ = 22514784. Its totient is φ = 16886076.

The previous prime is 19700363. The next prime is 19700449. The reversal of 19700429 is 92400791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19700429 - 2²⁴ = 2923213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19700395 and 19700404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19700449) 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 in 3 ways as a sum of consecutive naturals, for example, 1407167 + ... + 1407180.

It is an arithmetic number, because the mean of its divisors is an integer number (5628696).

Almost surely, 2^19700429 is an apocalyptic number.

It is an amenable number.

19700429 is a deficient number, since it is larger than the sum of its proper divisors (2814355).

19700429 is an equidigital number, since it uses as much as digits as its factorization.

19700429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814354.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 19700429 is about 4438.5165314551. The cubic root of 19700429 is about 270.0796701333.

The spelling of 19700429 in words is "nineteen million, seven hundred thousand, four hundred twenty-nine".