90127885909 has 4 divisors (see below), whose sum is σ = 91473078304. Its totient is φ = 88782693516.

The previous prime is 90127885889. The next prime is 90127885919. The reversal of 90127885909 is 90958872109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90127885909 - 2⁷ = 90127885781 is a prime.

It is a super-3 number, since 3×90127885909³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90127885919) 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, 672596097 + ... + 672596230.

It is an arithmetic number, because the mean of its divisors is an integer number (22868269576).

Almost surely, 2^90127885909 is an apocalyptic number.

It is an amenable number.

90127885909 is a deficient number, since it is larger than the sum of its proper divisors (1345192395).

90127885909 is a wasteful number, since it uses less digits than its factorization.

90127885909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345192394.

The product of its (nonzero) digits is 3265920, while the sum is 58.

The spelling of 90127885909 in words is "ninety billion, one hundred twenty-seven million, eight hundred eighty-five thousand, nine hundred nine".