91030869 has 24 divisors (see below), whose sum is σ = 142197120. Its totient is φ = 55897728.

The previous prime is 91030861. The next prime is 91030897. The reversal of 91030869 is 96803019.

It is not a de Polignac number, because 91030869 - 2³ = 91030861 is a prime.

It is a super-2 number, since 2×91030869² = 16573238221790322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91030861) 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 in 23 ways as a sum of consecutive naturals, for example, 862 + ... + 13520.

It is an arithmetic number, because the mean of its divisors is an integer number (5924880).

Almost surely, 2^91030869 is an apocalyptic number.

It is an amenable number.

91030869 is a deficient number, since it is larger than the sum of its proper divisors (51166251).

91030869 is a wasteful number, since it uses less digits than its factorization.

91030869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12729 (or 12726 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 91030869 is about 9541.0098522117. The cubic root of 91030869 is about 449.8449984680.

The spelling of 91030869 in words is "ninety-one million, thirty thousand, eight hundred sixty-nine".