90270384989 has 4 divisors (see below), whose sum is σ = 90613618656. Its totient is φ = 89927151324.

The previous prime is 90270384961. The next prime is 90270385003. The reversal of 90270384989 is 98948307209.

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 90270384989 - 2⁸ = 90270384733 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 (90270384949) 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, 171616439 + ... + 171616964.

It is an arithmetic number, because the mean of its divisors is an integer number (22653404664).

Almost surely, 2^90270384989 is an apocalyptic number.

It is an amenable number.

90270384989 is a deficient number, since it is larger than the sum of its proper divisors (343233667).

90270384989 is a wasteful number, since it uses less digits than its factorization.

90270384989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343233666.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The spelling of 90270384989 in words is "ninety billion, two hundred seventy million, three hundred eighty-four thousand, nine hundred eighty-nine".