90869071 has 2 divisors, whose sum is σ = 90869072. Its totient is φ = 90869070.

The previous prime is 90869057. The next prime is 90869087. The reversal of 90869071 is 17096809.

It is a weak prime.

It is an emirp because it is prime and its reverse (17096809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90869071 - 2²⁵ = 57314639 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90869011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45434535 + 45434536.

It is an arithmetic number, because the mean of its divisors is an integer number (45434536).

Almost surely, 2^90869071 is an apocalyptic number.

90869071 is a deficient number, since it is larger than the sum of its proper divisors (1).

90869071 is an equidigital number, since it uses as much as digits as its factorization.

90869071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 90869071 is about 9532.5269996995. The cubic root of 90869071 is about 449.5783226816.

The spelling of 90869071 in words is "ninety million, eight hundred sixty-nine thousand, seventy-one".