428456837 has 2 divisors, whose sum is σ = 428456838. Its totient is φ = 428456836.

The previous prime is 428456827. The next prime is 428456851. The reversal of 428456837 is 738654824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360658081 + 67798756 = 18991^2 + 8234^2 .

It is a cyclic number.

It is not a de Polignac number, because 428456837 - 2¹⁰ = 428455813 is a prime.

It is a super-2 number, since 2×428456837² = 367150522344089138, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 428456791 and 428456800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428456827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214228418 + 214228419.

It is an arithmetic number, because the mean of its divisors is an integer number (214228419).

Almost surely, 2^428456837 is an apocalyptic number.

It is an amenable number.

428456837 is a deficient number, since it is larger than the sum of its proper divisors (1).

428456837 is an equidigital number, since it uses as much as digits as its factorization.

428456837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 47.

The square root of 428456837 is about 20699.1989458530. The cubic root of 428456837 is about 753.8802382332.

The spelling of 428456837 in words is "four hundred twenty-eight million, four hundred fifty-six thousand, eight hundred thirty-seven".