457984789 has 2 divisors, whose sum is σ = 457984790. Its totient is φ = 457984788.

The previous prime is 457984783. The next prime is 457984817. The reversal of 457984789 is 987489754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234243025 + 223741764 = 15305^2 + 14958^2 .

It is a cyclic number.

It is not a de Polignac number, because 457984789 - 2⁵ = 457984757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457984783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228992394 + 228992395.

It is an arithmetic number, because the mean of its divisors is an integer number (228992395).

Almost surely, 2^457984789 is an apocalyptic number.

It is an amenable number.

457984789 is a deficient number, since it is larger than the sum of its proper divisors (1).

457984789 is an equidigital number, since it uses as much as digits as its factorization.

457984789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 61.

The square root of 457984789 is about 21400.5791744055. The cubic root of 457984789 is about 770.8153442412.

The spelling of 457984789 in words is "four hundred fifty-seven million, nine hundred eighty-four thousand, seven hundred eighty-nine".