84745449 has 12 divisors (see below), whose sum is σ = 123375616. Its totient is φ = 56051352.

The previous prime is 84745421. The next prime is 84745469. The reversal of 84745449 is 94454748.

It is not a de Polignac number, because 84745449 - 2⁷ = 84745321 is a prime.

It is a super-2 number, since 2×84745449² = 14363582252423202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84745469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35929 + ... + 38214.

Almost surely, 2^84745449 is an apocalyptic number.

It is an amenable number.

84745449 is a deficient number, since it is larger than the sum of its proper divisors (38630167).

84745449 is a wasteful number, since it uses less digits than its factorization.

84745449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74276 (or 74273 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 84745449 is about 9205.7291400519. The cubic root of 84745449 is about 439.2436195691.

The spelling of 84745449 in words is "eighty-four million, seven hundred forty-five thousand, four hundred forty-nine".