87947412 has 24 divisors (see below), whose sum is σ = 234526656. Its totient is φ = 25127808.

The previous prime is 87947411. The next prime is 87947417. The reversal of 87947412 is 21474978.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87947411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523413 + ... + 523580.

It is an arithmetic number, because the mean of its divisors is an integer number (9771944).

Almost surely, 2^87947412 is an apocalyptic number.

It is an amenable number.

87947412 is an abundant number, since it is smaller than the sum of its proper divisors (146579244).

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

87947412 is a wasteful number, since it uses less digits than its factorization.

87947412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047007 (or 1047005 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 87947412 is about 9378.0281509494. The cubic root of 87947412 is about 444.7073984398.

The spelling of 87947412 in words is "eighty-seven million, nine hundred forty-seven thousand, four hundred twelve".