90041797 has 4 divisors (see below), whose sum is σ = 90086220. Its totient is φ = 89997376.

The previous prime is 90041789. The next prime is 90041813. The reversal of 90041797 is 79714009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79714009 = 163 ⋅489043.

It can be written as a sum of positive squares in 2 ways, for example, as 22572001 + 67469796 = 4751^2 + 8214^2 .

It is a cyclic number.

It is not a de Polignac number, because 90041797 - 2³ = 90041789 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 (90041737) 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, 19018 + ... + 23275.

It is an arithmetic number, because the mean of its divisors is an integer number (22521555).

Almost surely, 2^90041797 is an apocalyptic number.

It is an amenable number.

90041797 is a deficient number, since it is larger than the sum of its proper divisors (44423).

90041797 is a wasteful number, since it uses less digits than its factorization.

90041797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44422.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 90041797 is about 9489.0356201249. The cubic root of 90041797 is about 448.2098377244.

It can be divided in two parts, 9004 and 1797, that added together give a palindrome (10801).

The spelling of 90041797 in words is "ninety million, forty-one thousand, seven hundred ninety-seven".