87926779 has 4 divisors (see below), whose sum is σ = 87950776. Its totient is φ = 87902784.

The previous prime is 87926767. The next prime is 87926789. The reversal of 87926779 is 97762978.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87926779 - 2⁷ = 87926651 is a prime.

It is a super-2 number, since 2×87926779² = 15462236930629682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87926719) 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 3 ways as a sum of consecutive naturals, for example, 5229 + ... + 14254.

It is an arithmetic number, because the mean of its divisors is an integer number (21987694).

Almost surely, 2^87926779 is an apocalyptic number.

87926779 is a deficient number, since it is larger than the sum of its proper divisors (23997).

87926779 is a wasteful number, since it uses less digits than its factorization.

87926779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23996.

The product of its digits is 2667168, while the sum is 55.

The square root of 87926779 is about 9376.9280150804. The cubic root of 87926779 is about 444.6726186959.

The spelling of 87926779 in words is "eighty-seven million, nine hundred twenty-six thousand, seven hundred seventy-nine".