88005391 has 4 divisors (see below), whose sum is σ = 90052072. Its totient is φ = 85958712.

The previous prime is 88005377. The next prime is 88005427. The reversal of 88005391 is 19350088.

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 88005391 - 2⁷ = 88005263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88005301) 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 3 ways as a sum of consecutive naturals, for example, 1023276 + ... + 1023361.

It is an arithmetic number, because the mean of its divisors is an integer number (22513018).

Almost surely, 2^88005391 is an apocalyptic number.

88005391 is a deficient number, since it is larger than the sum of its proper divisors (2046681).

88005391 is a wasteful number, since it uses less digits than its factorization.

88005391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046680.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 88005391 is about 9381.1188565117. The cubic root of 88005391 is about 444.8051008653.

The spelling of 88005391 in words is "eighty-eight million, five thousand, three hundred ninety-one".