428364137 has 2 divisors, whose sum is σ = 428364138. Its totient is φ = 428364136.

The previous prime is 428364119. The next prime is 428364203. The reversal of 428364137 is 731463824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418447936 + 9916201 = 20456^2 + 3149^2 .

It is a cyclic number.

It is not a de Polignac number, because 428364137 - 2¹⁴ = 428347753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428364137.

It is not a weakly prime, because it can be changed into another prime (428364037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214182068 + 214182069.

It is an arithmetic number, because the mean of its divisors is an integer number (214182069).

Almost surely, 2^428364137 is an apocalyptic number.

It is an amenable number.

428364137 is a deficient number, since it is larger than the sum of its proper divisors (1).

428364137 is an equidigital number, since it uses as much as digits as its factorization.

428364137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 38.

The square root of 428364137 is about 20696.9596076332. The cubic root of 428364137 is about 753.8258650092.

The spelling of 428364137 in words is "four hundred twenty-eight million, three hundred sixty-four thousand, one hundred thirty-seven".