428709053 has 2 divisors, whose sum is σ = 428709054. Its totient is φ = 428709052.

The previous prime is 428709023. The next prime is 428709091. The reversal of 428709053 is 350907824.

It is an a-pointer prime, because the next prime (428709091) can be obtained adding 428709053 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427538329 + 1170724 = 20677^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 428709053 - 2¹⁰ = 428708029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428708998 and 428709016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428709023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214354526 + 214354527.

It is an arithmetic number, because the mean of its divisors is an integer number (214354527).

Almost surely, 2^428709053 is an apocalyptic number.

It is an amenable number.

428709053 is a deficient number, since it is larger than the sum of its proper divisors (1).

428709053 is an equidigital number, since it uses as much as digits as its factorization.

428709053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 428709053 is about 20705.2904592039. The cubic root of 428709053 is about 754.0281359477.

The spelling of 428709053 in words is "four hundred twenty-eight million, seven hundred nine thousand, fifty-three".