88778089 has 4 divisors (see below), whose sum is σ = 93450640. Its totient is φ = 84105540.

The previous prime is 88778087. The next prime is 88778099. The reversal of 88778089 is 98087788.

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 88778089 - 2¹ = 88778087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88778083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2336247 + ... + 2336284.

It is an arithmetic number, because the mean of its divisors is an integer number (23362660).

Almost surely, 2^88778089 is an apocalyptic number.

It is an amenable number.

88778089 is a deficient number, since it is larger than the sum of its proper divisors (4672551).

88778089 is a wasteful number, since it uses less digits than its factorization.

88778089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672550.

The product of its (nonzero) digits is 1806336, while the sum is 55.

The square root of 88778089 is about 9422.2125320967. The cubic root of 88778089 is about 446.1031235463.

The spelling of 88778089 in words is "eighty-eight million, seven hundred seventy-eight thousand, eighty-nine".