84478468 has 6 divisors (see below), whose sum is σ = 147837326. Its totient is φ = 42239232.

The previous prime is 84478463. The next prime is 84478469. The reversal of 84478468 is 86487448.

It can be written as a sum of positive squares in only one way, i.e., 77123524 + 7354944 = 8782^2 + 2712^2 .

It is a super-2 number, since 2×84478468² = 14273223111254048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84478463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10559805 + ... + 10559812.

Almost surely, 2^84478468 is an apocalyptic number.

It is an amenable number.

84478468 is a deficient number, since it is larger than the sum of its proper divisors (63358858).

84478468 is a wasteful number, since it uses less digits than its factorization.

84478468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21119621 (or 21119619 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 49.

The square root of 84478468 is about 9191.2168944052. The cubic root of 84478468 is about 438.7818718037.

The spelling of 84478468 in words is "eighty-four million, four hundred seventy-eight thousand, four hundred sixty-eight".