87939825 has 12 divisors (see below), whose sum is σ = 145393968. Its totient is φ = 46901200.

The previous prime is 87939821. The next prime is 87939829. The reversal of 87939825 is 52893978.

It is an interprime number because it is at equal distance from previous prime (87939821) and next prime (87939829).

It is not a de Polignac number, because 87939825 - 2² = 87939821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87939821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586191 + ... + 586340.

It is an arithmetic number, because the mean of its divisors is an integer number (12116164).

Almost surely, 2^87939825 is an apocalyptic number.

It is an amenable number.

87939825 is a deficient number, since it is larger than the sum of its proper divisors (57454143).

87939825 is a wasteful number, since it uses less digits than its factorization.

87939825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172544 (or 1172539 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 87939825 is about 9377.6236328827. The cubic root of 87939825 is about 444.6946101459.

It can be divided in two parts, 879 and 39825, that added together give a palindrome (40704).

The spelling of 87939825 in words is "eighty-seven million, nine hundred thirty-nine thousand, eight hundred twenty-five".