428094637 has 2 divisors, whose sum is σ = 428094638. Its totient is φ = 428094636.

The previous prime is 428094631. The next prime is 428094671. The reversal of 428094637 is 736490824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427910596 + 184041 = 20686^2 + 429^2 .

It is a cyclic number.

It is not a de Polignac number, because 428094637 - 2⁷ = 428094509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428094593 and 428094602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428094631) 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, 214047318 + 214047319.

It is an arithmetic number, because the mean of its divisors is an integer number (214047319).

Almost surely, 2^428094637 is an apocalyptic number.

It is an amenable number.

428094637 is a deficient number, since it is larger than the sum of its proper divisors (1).

428094637 is an equidigital number, since it uses as much as digits as its factorization.

428094637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 428094637 is about 20690.4479651843. The cubic root of 428094637 is about 753.6677451042.

The spelling of 428094637 in words is "four hundred twenty-eight million, ninety-four thousand, six hundred thirty-seven".