91000699 has 2 divisors, whose sum is σ = 91000700. Its totient is φ = 91000698.

The previous prime is 91000687. The next prime is 91000727. The reversal of 91000699 is 99600019.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99600019) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91000699 - 2⁵ = 91000667 is a prime.

It is a super-2 number, since 2×91000699² = 16562254436977202, which contains 22 as substring.

It is equal to p_5271694 and since 91000699 and 5271694 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (91000639) 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 as a sum of consecutive naturals, namely, 45500349 + 45500350.

It is an arithmetic number, because the mean of its divisors is an integer number (45500350).

Almost surely, 2^91000699 is an apocalyptic number.

91000699 is a deficient number, since it is larger than the sum of its proper divisors (1).

91000699 is an equidigital number, since it uses as much as digits as its factorization.

91000699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 91000699 is about 9539.4286516541. The cubic root of 91000699 is about 449.7952961953.

The spelling of 91000699 in words is "ninety-one million, six hundred ninety-nine", and thus it is an aban number.