90469799999 has 4 divisors (see below), whose sum is σ = 95231368440. Its totient is φ = 85708231560.

The previous prime is 90469799993. The next prime is 90469800013. The reversal of 90469799999 is 99999796409.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90469799999 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 (90469799993) 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, 2380784192 + ... + 2380784229.

It is an arithmetic number, because the mean of its divisors is an integer number (23807842110).

Almost surely, 2^90469799999 is an apocalyptic number.

90469799999 is a deficient number, since it is larger than the sum of its proper divisors (4761568441).

90469799999 is a wasteful number, since it uses less digits than its factorization.

90469799999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4761568440.

The product of its (nonzero) digits is 803538792, while the sum is 80.

The spelling of 90469799999 in words is "ninety billion, four hundred sixty-nine million, seven hundred ninety-nine thousand, nine hundred ninety-nine".