90587841 has 4 divisors (see below), whose sum is σ = 120783792. Its totient is φ = 60391892.

The previous prime is 90587821. The next prime is 90587863. The reversal of 90587841 is 14878509.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14878509 = 3 ⋅4959503.

It is a cyclic number.

It is not a de Polignac number, because 90587841 - 2¹⁰ = 90586817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90587793 and 90587802.

It is not an unprimeable number, because it can be changed into a prime (90587821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15097971 + ... + 15097976.

It is an arithmetic number, because the mean of its divisors is an integer number (30195948).

Almost surely, 2^90587841 is an apocalyptic number.

It is an amenable number.

90587841 is a deficient number, since it is larger than the sum of its proper divisors (30195951).

90587841 is a wasteful number, since it uses less digits than its factorization.

90587841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30195950.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 90587841 is about 9517.7644959308. The cubic root of 90587841 is about 449.1140445388.

The spelling of 90587841 in words is "ninety million, five hundred eighty-seven thousand, eight hundred forty-one".