90847277 has 4 divisors (see below), whose sum is σ = 91244220. Its totient is φ = 90450336.

The previous prime is 90847271. The next prime is 90847283. The reversal of 90847277 is 77274809.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77274809 = 17 ⋅4545577.

It is an interprime number because it is at equal distance from previous prime (90847271) and next prime (90847283).

It can be written as a sum of positive squares in 2 ways, for example, as 43705321 + 47141956 = 6611^2 + 6866^2 .

It is a cyclic number.

It is not a de Polignac number, because 90847277 - 2¹⁶ = 90781741 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 (90847271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198128 + ... + 198585.

It is an arithmetic number, because the mean of its divisors is an integer number (22811055).

Almost surely, 2^90847277 is an apocalyptic number.

It is an amenable number.

90847277 is a deficient number, since it is larger than the sum of its proper divisors (396943).

90847277 is a wasteful number, since it uses less digits than its factorization.

90847277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396942.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 90847277 is about 9531.3837925036. The cubic root of 90847277 is about 449.5423775822.

It can be divided in two parts, 9084 and 7277, that added together give a palindrome (16361).

The spelling of 90847277 in words is "ninety million, eight hundred forty-seven thousand, two hundred seventy-seven".