428349253 has 2 divisors, whose sum is σ = 428349254. Its totient is φ = 428349252.

The previous prime is 428349209. The next prime is 428349287. The reversal of 428349253 is 352943824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274167364 + 154181889 = 16558^2 + 12417^2 .

It is a cyclic number.

It is not a de Polignac number, because 428349253 - 2²⁵ = 394794821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428349203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214174626 + 214174627.

It is an arithmetic number, because the mean of its divisors is an integer number (214174627).

Almost surely, 2^428349253 is an apocalyptic number.

It is an amenable number.

428349253 is a deficient number, since it is larger than the sum of its proper divisors (1).

428349253 is an equidigital number, since it uses as much as digits as its factorization.

428349253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 428349253 is about 20696.6000347883. The cubic root of 428349253 is about 753.8171340619.

The spelling of 428349253 in words is "four hundred twenty-eight million, three hundred forty-nine thousand, two hundred fifty-three".