428359637 has 2 divisors, whose sum is σ = 428359638. Its totient is φ = 428359636.

The previous prime is 428359601. The next prime is 428359691. The reversal of 428359637 is 736953824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354983281 + 73376356 = 18841^2 + 8566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428359637 is a prime.

It is a super-2 number, since 2×428359637² = 366983957221543538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 428359591 and 428359600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428359537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214179818 + 214179819.

It is an arithmetic number, because the mean of its divisors is an integer number (214179819).

Almost surely, 2^428359637 is an apocalyptic number.

It is an amenable number.

428359637 is a deficient number, since it is larger than the sum of its proper divisors (1).

428359637 is an equidigital number, since it uses as much as digits as its factorization.

428359637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 47.

The square root of 428359637 is about 20696.8508957281. The cubic root of 428359637 is about 753.8232253326.

The spelling of 428359637 in words is "four hundred twenty-eight million, three hundred fifty-nine thousand, six hundred thirty-seven".