90493859499 has 4 divisors (see below), whose sum is σ = 120658479336. Its totient is φ = 60329239664.

The previous prime is 90493859441. The next prime is 90493859531. The reversal of 90493859499 is 99495839409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99495839409 = 3 ⋅33165279803.

It is a cyclic number.

It is not a de Polignac number, because 90493859499 - 2¹³ = 90493851307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90493859399) 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, 15082309914 + ... + 15082309919.

It is an arithmetic number, because the mean of its divisors is an integer number (30164619834).

Almost surely, 2^90493859499 is an apocalyptic number.

90493859499 is a deficient number, since it is larger than the sum of its proper divisors (30164619837).

90493859499 is a wasteful number, since it uses less digits than its factorization.

90493859499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30164619836.

The product of its (nonzero) digits is 113374080, while the sum is 69.

The spelling of 90493859499 in words is "ninety billion, four hundred ninety-three million, eight hundred fifty-nine thousand, four hundred ninety-nine".