90214889699 has 4 divisors (see below), whose sum is σ = 98416243320. Its totient is φ = 82013536080.

The previous prime is 90214889671. The next prime is 90214889717. The reversal of 90214889699 is 99698841209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99698841209 = 11 ⋅9063531019.

It is a cyclic number.

It is not a de Polignac number, because 90214889699 - 2¹² = 90214885603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90214883699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4100676794 + ... + 4100676815.

It is an arithmetic number, because the mean of its divisors is an integer number (24604060830).

Almost surely, 2^90214889699 is an apocalyptic number.

90214889699 is a deficient number, since it is larger than the sum of its proper divisors (8201353621).

90214889699 is a wasteful number, since it uses less digits than its factorization.

90214889699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8201353620.

The product of its (nonzero) digits is 20155392, while the sum is 65.

The spelling of 90214889699 in words is "ninety billion, two hundred fourteen million, eight hundred eighty-nine thousand, six hundred ninety-nine".