457689649 has 4 divisors (see below), whose sum is σ = 465192820. Its totient is φ = 450186480.

The previous prime is 457689647. The next prime is 457689653. The reversal of 457689649 is 946986754.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38750625 + 418939024 = 6225^2 + 20468^2 .

It is a cyclic number.

It is not a de Polignac number, because 457689649 - 2¹ = 457689647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 457689593 and 457689602.

It is not an unprimeable number, because it can be changed into a prime (457689641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3751494 + ... + 3751615.

It is an arithmetic number, because the mean of its divisors is an integer number (116298205).

Almost surely, 2^457689649 is an apocalyptic number.

It is an amenable number.

457689649 is a deficient number, since it is larger than the sum of its proper divisors (7503171).

457689649 is an equidigital number, since it uses as much as digits as its factorization.

457689649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7503170.

The product of its digits is 13063680, while the sum is 58.

The square root of 457689649 is about 21393.6824553418. The cubic root of 457689649 is about 770.6497293323.

The spelling of 457689649 in words is "four hundred fifty-seven million, six hundred eighty-nine thousand, six hundred forty-nine".