428693401 has 2 divisors, whose sum is σ = 428693402. Its totient is φ = 428693400.

The previous prime is 428693383. The next prime is 428693431. The reversal of 428693401 is 104396824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 428490000 + 203401 = 20700^2 + 451^2 .

It is a cyclic number.

It is not a de Polignac number, because 428693401 - 2¹¹ = 428691353 is a prime.

It is not a weakly prime, because it can be changed into another prime (428693431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214346700 + 214346701.

It is an arithmetic number, because the mean of its divisors is an integer number (214346701).

Almost surely, 2^428693401 is an apocalyptic number.

It is an amenable number.

428693401 is a deficient number, since it is larger than the sum of its proper divisors (1).

428693401 is an equidigital number, since it uses as much as digits as its factorization.

428693401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 428693401 is about 20704.9124847221. The cubic root of 428693401 is about 754.0189594118.

The spelling of 428693401 in words is "four hundred twenty-eight million, six hundred ninety-three thousand, four hundred one".