842494449 has 16 divisors (see below), whose sum is σ = 1206161280. Its totient is φ = 521176320.

The previous prime is 842494441. The next prime is 842494487. The reversal of 842494449 is 944494248.

It is a happy number.

It is not a de Polignac number, because 842494449 - 2³ = 842494441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 842494398 and 842494407.

It is not an unprimeable number, because it can be changed into a prime (842494441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112714 + ... + 119955.

It is an arithmetic number, because the mean of its divisors is an integer number (75385080).

Almost surely, 2^842494449 is an apocalyptic number.

It is an amenable number.

842494449 is a deficient number, since it is larger than the sum of its proper divisors (363666831).

842494449 is a wasteful number, since it uses less digits than its factorization.

842494449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232760.

The product of its digits is 1327104, while the sum is 48.

The square root of 842494449 is about 29025.7549255829. The cubic root of 842494449 is about 944.4718450700.

The spelling of 842494449 in words is "eight hundred forty-two million, four hundred ninety-four thousand, four hundred forty-nine".