90889346206 has 4 divisors (see below), whose sum is σ = 136334019312. Its totient is φ = 45444673102.

The previous prime is 90889346203. The next prime is 90889346221. The reversal of 90889346206 is 60264398809.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90889346203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22722336550 + ... + 22722336553.

It is an arithmetic number, because the mean of its divisors is an integer number (34083504828).

Almost surely, 2^90889346206 is an apocalyptic number.

90889346206 is a deficient number, since it is larger than the sum of its proper divisors (45444673106).

90889346206 is a wasteful number, since it uses less digits than its factorization.

90889346206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45444673105.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 90889346206 in words is "ninety billion, eight hundred eighty-nine million, three hundred forty-six thousand, two hundred six".