890805485 has 4 divisors (see below), whose sum is σ = 1068966588. Its totient is φ = 712644384.

The previous prime is 890805467. The next prime is 890805511. The reversal of 890805485 is 584508098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584508098 = 2 ⋅292254049.

It can be written as a sum of positive squares in 2 ways, for example, as 232318564 + 658486921 = 15242^2 + 25661^2 .

It is a cyclic number.

It is not a de Polignac number, because 890805485 - 2¹² = 890801389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89080544 + ... + 89080553.

It is an arithmetic number, because the mean of its divisors is an integer number (267241647).

Almost surely, 2^890805485 is an apocalyptic number.

It is an amenable number.

890805485 is a deficient number, since it is larger than the sum of its proper divisors (178161103).

890805485 is a wasteful number, since it uses less digits than its factorization.

890805485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178161102.

The product of its (nonzero) digits is 460800, while the sum is 47.

The square root of 890805485 is about 29846.3646865075. The cubic root of 890805485 is about 962.1902699361.

The spelling of 890805485 in words is "eight hundred ninety million, eight hundred five thousand, four hundred eighty-five".