8449041428 has 54 divisors (see below), whose sum is σ = 15469021386. Its totient is φ = 4036481696.

The previous prime is 8449041409. The next prime is 8449041431. The reversal of 8449041428 is 8241409448.

It can be written as a sum of positive squares in only one way, i.e., 7811377924 + 637663504 = 88382^2 + 25252^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 78962951 + ... + 78963057.

It is an arithmetic number, because the mean of its divisors is an integer number (286463359).

Almost surely, 2^8449041428 is an apocalyptic number.

It is an amenable number.

8449041428 is a deficient number, since it is larger than the sum of its proper divisors (7019979958).

8449041428 is a wasteful number, since it uses less digits than its factorization.

8449041428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The square root of 8449041428 is about 91918.6674620558. The cubic root of 8449041428 is about 2036.7410341342.

The spelling of 8449041428 in words is "eight billion, four hundred forty-nine million, forty-one thousand, four hundred twenty-eight".