90702841 has 2 divisors, whose sum is σ = 90702842. Its totient is φ = 90702840.

The previous prime is 90702767. The next prime is 90702847. The reversal of 90702841 is 14820709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88284816 + 2418025 = 9396^2 + 1555^2 .

It is an emirp because it is prime and its reverse (14820709) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90702841 - 2⁹ = 90702329 is a prime.

It is not a weakly prime, because it can be changed into another prime (90702847) 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 as a sum of consecutive naturals, namely, 45351420 + 45351421.

It is an arithmetic number, because the mean of its divisors is an integer number (45351421).

Almost surely, 2^90702841 is an apocalyptic number.

It is an amenable number.

90702841 is a deficient number, since it is larger than the sum of its proper divisors (1).

90702841 is an equidigital number, since it uses as much as digits as its factorization.

90702841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 90702841 is about 9523.8039144031. The cubic root of 90702841 is about 449.3040121785.

It can be divided in two parts, 9070 and 2841, that added together give a palindrome (11911).

The spelling of 90702841 in words is "ninety million, seven hundred two thousand, eight hundred forty-one".