84531408 has 40 divisors (see below), whose sum is σ = 235172448. Its totient is φ = 26009472.

The previous prime is 84531407. The next prime is 84531409. The reversal of 84531408 is 80413548.

It is an interprime number because it is at equal distance from previous prime (84531407) and next prime (84531409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84531401) 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 7 ways as a sum of consecutive naturals, for example, 67110 + ... + 68357.

Almost surely, 2^84531408 is an apocalyptic number.

It is an amenable number.

84531408 is an abundant number, since it is smaller than the sum of its proper divisors (150641040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84531408 is a wasteful number, since it uses less digits than its factorization.

84531408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135491 (or 135485 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 84531408 is about 9194.0963666910. The cubic root of 84531408 is about 438.8735095990.

The spelling of 84531408 in words is "eighty-four million, five hundred thirty-one thousand, four hundred eight".