428607929 has 2 divisors, whose sum is σ = 428607930. Its totient is φ = 428607928.

The previous prime is 428607857. The next prime is 428607941. The reversal of 428607929 is 929706824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 398082304 + 30525625 = 19952^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 428607929 - 2¹⁶ = 428542393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (422607929) 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, 214303964 + 214303965.

It is an arithmetic number, because the mean of its divisors is an integer number (214303965).

Almost surely, 2^428607929 is an apocalyptic number.

It is an amenable number.

428607929 is a deficient number, since it is larger than the sum of its proper divisors (1).

428607929 is an equidigital number, since it uses as much as digits as its factorization.

428607929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 428607929 is about 20702.8483306042. The cubic root of 428607929 is about 753.9688445030.

The spelling of 428607929 in words is "four hundred twenty-eight million, six hundred seven thousand, nine hundred twenty-nine".