88220399 has 4 divisors (see below), whose sum is σ = 89715720. Its totient is φ = 86725080.

The previous prime is 88220393. The next prime is 88220413. The reversal of 88220399 is 99302288.

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 88220399 - 2¹⁶ = 88154863 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 (88220393) 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, 747572 + ... + 747689.

It is an arithmetic number, because the mean of its divisors is an integer number (22428930).

Almost surely, 2^88220399 is an apocalyptic number.

88220399 is a deficient number, since it is larger than the sum of its proper divisors (1495321).

88220399 is a wasteful number, since it uses less digits than its factorization.

88220399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495320.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 88220399 is about 9392.5714796322. The cubic root of 88220399 is about 445.1670441339.

The spelling of 88220399 in words is "eighty-eight million, two hundred twenty thousand, three hundred ninety-nine".