91000001029 has 8 divisors (see below), whose sum is σ = 110117648448. Its totient is φ = 73411765440.

The previous prime is 91000001017. The next prime is 91000001039. The reversal of 91000001029 is 92010000019.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91000001029 - 2⁹ = 91000000517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91000001039) 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 7 ways as a sum of consecutive naturals, for example, 382352827 + ... + 382353064.

It is an arithmetic number, because the mean of its divisors is an integer number (13764706056).

Almost surely, 2^91000001029 is an apocalyptic number.

It is an amenable number.

91000001029 is a deficient number, since it is larger than the sum of its proper divisors (19117647419).

91000001029 is a wasteful number, since it uses less digits than its factorization.

91000001029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764705915.

The product of its (nonzero) digits is 162, while the sum is 22.

It can be divided in two parts, 9100000102 and 9, that multiplied together give a palindrome (81900000918).

The spelling of 91000001029 in words is "ninety-one billion, one thousand, twenty-nine".