428840183 has 2 divisors, whose sum is σ = 428840184. Its totient is φ = 428840182.

The previous prime is 428840149. The next prime is 428840189. The reversal of 428840183 is 381048824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428840183 - 2¹⁸ = 428578039 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428840189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214420091 + 214420092.

It is an arithmetic number, because the mean of its divisors is an integer number (214420092).

Almost surely, 2^428840183 is an apocalyptic number.

428840183 is a deficient number, since it is larger than the sum of its proper divisors (1).

428840183 is an equidigital number, since it uses as much as digits as its factorization.

428840183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 428840183 is about 20708.4567990954. The cubic root of 428840183 is about 754.1050067527.

The spelling of 428840183 in words is "four hundred twenty-eight million, eight hundred forty thousand, one hundred eighty-three".