429891797 has 2 divisors, whose sum is σ = 429891798. Its totient is φ = 429891796.

The previous prime is 429891779. The next prime is 429891809. The reversal of 429891797 is 797198924.

Together with previous prime (429891779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310076881 + 119814916 = 17609^2 + 10946^2 .

It is a cyclic number.

It is not a de Polignac number, because 429891797 - 2²⁰ = 428843221 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 (429891727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214945898 + 214945899.

It is an arithmetic number, because the mean of its divisors is an integer number (214945899).

Almost surely, 2^429891797 is an apocalyptic number.

It is an amenable number.

429891797 is a deficient number, since it is larger than the sum of its proper divisors (1).

429891797 is an equidigital number, since it uses as much as digits as its factorization.

429891797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 56.

The square root of 429891797 is about 20733.8321831735. The cubic root of 429891797 is about 754.7209161036.

The spelling of 429891797 in words is "four hundred twenty-nine million, eight hundred ninety-one thousand, seven hundred ninety-seven".