888457649 has 2 divisors, whose sum is σ = 888457650. Its totient is φ = 888457648.

The previous prime is 888457643. The next prime is 888457657. The reversal of 888457649 is 946754888.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888457249 + 400 = 29807^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 888457649 - 2⁸ = 888457393 is a prime.

It is not a weakly prime, because it can be changed into another prime (888457643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444228824 + 444228825.

It is an arithmetic number, because the mean of its divisors is an integer number (444228825).

Almost surely, 2^888457649 is an apocalyptic number.

It is an amenable number.

888457649 is a deficient number, since it is larger than the sum of its proper divisors (1).

888457649 is an equidigital number, since it uses as much as digits as its factorization.

888457649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15482880, while the sum is 59.

The square root of 888457649 is about 29807.0067098325. The cubic root of 888457649 is about 961.3441995005.

The spelling of 888457649 in words is "eight hundred eighty-eight million, four hundred fifty-seven thousand, six hundred forty-nine".