90106293 has 4 divisors (see below), whose sum is σ = 120141728. Its totient is φ = 60070860.

The previous prime is 90106283. The next prime is 90106297. The reversal of 90106293 is 39260109.

90106293 is nontrivially palindromic in base 14.

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 not a de Polignac number, because 90106293 - 2⁶ = 90106229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90106293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90106297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15017713 + ... + 15017718.

It is an arithmetic number, because the mean of its divisors is an integer number (30035432).

Almost surely, 2^90106293 is an apocalyptic number.

It is an amenable number.

90106293 is a deficient number, since it is larger than the sum of its proper divisors (30035435).

90106293 is a wasteful number, since it uses less digits than its factorization.

90106293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30035434.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 90106293 is about 9492.4334603936. The cubic root of 90106293 is about 448.3168281937.

The spelling of 90106293 in words is "ninety million, one hundred six thousand, two hundred ninety-three".