89910401998 has 8 divisors (see below), whose sum is σ = 134879949720. Its totient is φ = 44950418760.

The previous prime is 89910401989. The next prime is 89910402007.

89910401998 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (89910401989) and next prime (89910402007).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2367573 + ... + 2405248.

It is an arithmetic number, because the mean of its divisors is an integer number (16859993715).

Almost surely, 2^89910401998 is an apocalyptic number.

89910401998 is a deficient number, since it is larger than the sum of its proper divisors (44969547722).

89910401998 is a wasteful number, since it uses less digits than its factorization.

89910401998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782242.

The product of its (nonzero) digits is 1679616, while the sum is 58.

The spelling of 89910401998 in words is "eighty-nine billion, nine hundred ten million, four hundred one thousand, nine hundred ninety-eight".