83987412 has 24 divisors (see below), whose sum is σ = 207498816. Its totient is φ = 26348928.

The previous prime is 83987411. The next prime is 83987461. The reversal of 83987412 is 21478938.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83987411) 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, 205648 + ... + 206055.

It is an arithmetic number, because the mean of its divisors is an integer number (8645784).

Almost surely, 2^83987412 is an apocalyptic number.

It is an amenable number.

83987412 is an abundant number, since it is smaller than the sum of its proper divisors (123511404).

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

83987412 is a wasteful number, since it uses less digits than its factorization.

83987412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411727 (or 411725 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 83987412 is about 9164.4646324813. The cubic root of 83987412 is about 437.9300361551.

The spelling of 83987412 in words is "eighty-three million, nine hundred eighty-seven thousand, four hundred twelve".