428166337 has 2 divisors, whose sum is σ = 428166338. Its totient is φ = 428166336.

The previous prime is 428166329. The next prime is 428166341. The reversal of 428166337 is 733661824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427290241 + 876096 = 20671^2 + 936^2 .

It is a cyclic number.

It is not a de Polignac number, because 428166337 - 2³ = 428166329 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428166337.

It is not a weakly prime, because it can be changed into another prime (428166307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214083168 + 214083169.

It is an arithmetic number, because the mean of its divisors is an integer number (214083169).

Almost surely, 2^428166337 is an apocalyptic number.

It is an amenable number.

428166337 is a deficient number, since it is larger than the sum of its proper divisors (1).

428166337 is an equidigital number, since it uses as much as digits as its factorization.

428166337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 428166337 is about 20692.1805762467. The cubic root of 428166337 is about 753.7098191038.

The spelling of 428166337 in words is "four hundred twenty-eight million, one hundred sixty-six thousand, three hundred thirty-seven".