88820999 has 4 divisors (see below), whose sum is σ = 89166864. Its totient is φ = 88475136.

The previous prime is 88820989. The next prime is 88821001. The reversal of 88820999 is 99902888.

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 88820999 - 2¹⁶ = 88755463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88820999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88820959) 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, 172547 + ... + 173060.

It is an arithmetic number, because the mean of its divisors is an integer number (22291716).

Almost surely, 2^88820999 is an apocalyptic number.

88820999 is a deficient number, since it is larger than the sum of its proper divisors (345865).

88820999 is a wasteful number, since it uses less digits than its factorization.

88820999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345864.

The product of its (nonzero) digits is 746496, while the sum is 53.

The square root of 88820999 is about 9424.4893230350. The cubic root of 88820999 is about 446.1749851283.

The spelling of 88820999 in words is "eighty-eight million, eight hundred twenty thousand, nine hundred ninety-nine".