19770029 has 2 divisors, whose sum is σ = 19770030. Its totient is φ = 19770028.

The previous prime is 19770017. The next prime is 19770061. The reversal of 19770029 is 92007791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10252804 + 9517225 = 3202^2 + 3085^2 .

It is a cyclic number.

It is not a de Polignac number, because 19770029 - 2⁸ = 19769773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19770229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9885014 + 9885015.

It is an arithmetic number, because the mean of its divisors is an integer number (9885015).

Almost surely, 2^19770029 is an apocalyptic number.

It is an amenable number.

19770029 is a deficient number, since it is larger than the sum of its proper divisors (1).

19770029 is an equidigital number, since it uses as much as digits as its factorization.

19770029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 19770029 is about 4446.3500761861. The cubic root of 19770029 is about 270.3973527526.

The spelling of 19770029 in words is "nineteen million, seven hundred seventy thousand, twenty-nine".