90839911 has 2 divisors, whose sum is σ = 90839912. Its totient is φ = 90839910.

The previous prime is 90839869. The next prime is 90839927. The reversal of 90839911 is 11993809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90839911 - 2⁷ = 90839783 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 (90839941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45419955 + 45419956.

It is an arithmetic number, because the mean of its divisors is an integer number (45419956).

Almost surely, 2^90839911 is an apocalyptic number.

90839911 is a deficient number, since it is larger than the sum of its proper divisors (1).

90839911 is an equidigital number, since it uses as much as digits as its factorization.

90839911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 90839911 is about 9530.9973769800. The cubic root of 90839911 is about 449.5302274522.

The spelling of 90839911 in words is "ninety million, eight hundred thirty-nine thousand, nine hundred eleven".