87939853 has 4 divisors (see below), whose sum is σ = 88017408. Its totient is φ = 87862300.

The previous prime is 87939851. The next prime is 87939869. The reversal of 87939853 is 35893978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87939853 - 2¹ = 87939851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87939853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87939851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37051 + ... + 39352.

It is an arithmetic number, because the mean of its divisors is an integer number (22004352).

Almost surely, 2^87939853 is an apocalyptic number.

It is an amenable number.

87939853 is a deficient number, since it is larger than the sum of its proper divisors (77555).

87939853 is a wasteful number, since it uses less digits than its factorization.

87939853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77554.

The product of its digits is 1632960, while the sum is 52.

The square root of 87939853 is about 9377.6251257981. The cubic root of 87939853 is about 444.6946573427.

The spelling of 87939853 in words is "eighty-seven million, nine hundred thirty-nine thousand, eight hundred fifty-three".