84478462 has 4 divisors (see below), whose sum is σ = 126717696. Its totient is φ = 42239230.

The previous prime is 84478451. The next prime is 84478463. The reversal of 84478462 is 26487448.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×84478462² = 14273221083770888, which contains 22 as substring.

It is a congruent number.

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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21119614 + ... + 21119617.

It is an arithmetic number, because the mean of its divisors is an integer number (31679424).

Almost surely, 2^84478462 is an apocalyptic number.

84478462 is a deficient number, since it is larger than the sum of its proper divisors (42239234).

84478462 is a wasteful number, since it uses less digits than its factorization.

84478462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42239233.

The product of its digits is 344064, while the sum is 43.

The square root of 84478462 is about 9191.2165680067. The cubic root of 84478462 is about 438.7818614157.

The spelling of 84478462 in words is "eighty-four million, four hundred seventy-eight thousand, four hundred sixty-two".