87940853 has 16 divisors (see below), whose sum is σ = 118075776. Its totient is φ = 63253440.

The previous prime is 87940849. The next prime is 87940861. The reversal of 87940853 is 35804978.

It is a cyclic number.

It is not a de Polignac number, because 87940853 - 2² = 87940849 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87943853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42926 + ... + 44927.

It is an arithmetic number, because the mean of its divisors is an integer number (7379736).

Almost surely, 2^87940853 is an apocalyptic number.

It is an amenable number.

87940853 is a deficient number, since it is larger than the sum of its proper divisors (30134923).

87940853 is a wasteful number, since it uses less digits than its factorization.

87940853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87884.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 87940853 is about 9377.6784440500. The cubic root of 87940853 is about 444.6963429379.

The spelling of 87940853 in words is "eighty-seven million, nine hundred forty thousand, eight hundred fifty-three".