87929693 has 2 divisors, whose sum is σ = 87929694. Its totient is φ = 87929692.

The previous prime is 87929687. The next prime is 87929747. The reversal of 87929693 is 39692978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73994404 + 13935289 = 8602^2 + 3733^2 .

It is a cyclic number.

It is not a de Polignac number, because 87929693 - 2⁶ = 87929629 is a prime.

It is a super-2 number, since 2×87929693² = 15463261822148498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87926693) 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 as a sum of consecutive naturals, namely, 43964846 + 43964847.

It is an arithmetic number, because the mean of its divisors is an integer number (43964847).

Almost surely, 2^87929693 is an apocalyptic number.

It is an amenable number.

87929693 is a deficient number, since it is larger than the sum of its proper divisors (1).

87929693 is an equidigital number, since it uses as much as digits as its factorization.

87929693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 53.

The square root of 87929693 is about 9377.0833951714. The cubic root of 87929693 is about 444.6775309714.

The spelling of 87929693 in words is "eighty-seven million, nine hundred twenty-nine thousand, six hundred ninety-three".