84478437 has 32 divisors (see below), whose sum is σ = 129941760. Its totient is φ = 54198720.

The previous prime is 84478417. The next prime is 84478451. The reversal of 84478437 is 73487448.

It is a de Polignac number, because none of the positive numbers 2^k-84478437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84478392 and 84478401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84478417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102487 + ... + 103307.

It is an arithmetic number, because the mean of its divisors is an integer number (4060680).

Almost surely, 2^84478437 is an apocalyptic number.

It is an amenable number.

84478437 is a deficient number, since it is larger than the sum of its proper divisors (45463323).

84478437 is a wasteful number, since it uses less digits than its factorization.

84478437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 964 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

The square root of 84478437 is about 9191.2152080125. The cubic root of 84478437 is about 438.7818181323.

The spelling of 84478437 in words is "eighty-four million, four hundred seventy-eight thousand, four hundred thirty-seven".