91029697 has 8 divisors (see below), whose sum is σ = 99375552. Its totient is φ = 82695600.

The previous prime is 91029691. The next prime is 91029709. The reversal of 91029697 is 79692019.

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 91029697 - 2⁷ = 91029569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91029691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24172 + ... + 27682.

It is an arithmetic number, because the mean of its divisors is an integer number (12421944).

Almost surely, 2^91029697 is an apocalyptic number.

It is an amenable number.

91029697 is a deficient number, since it is larger than the sum of its proper divisors (8345855).

91029697 is a wasteful number, since it uses less digits than its factorization.

91029697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5879.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 91029697 is about 9540.9484329389. The cubic root of 91029697 is about 449.8430679119.

The spelling of 91029697 in words is "ninety-one million, twenty-nine thousand, six hundred ninety-seven".