91828129 has 4 divisors (see below), whose sum is σ = 92934576. Its totient is φ = 90721684.

The previous prime is 91828127. The next prime is 91828157. The reversal of 91828129 is 92182819.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92182819 = 6343 ⋅14533.

It is a cyclic number.

It is not a de Polignac number, because 91828129 - 2¹ = 91828127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91828091 and 91828100.

It is not an unprimeable number, because it can be changed into a prime (91828127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553099 + ... + 553264.

It is an arithmetic number, because the mean of its divisors is an integer number (23233644).

Almost surely, 2^91828129 is an apocalyptic number.

It is an amenable number.

91828129 is a deficient number, since it is larger than the sum of its proper divisors (1106447).

91828129 is a wasteful number, since it uses less digits than its factorization.

91828129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106446.

The product of its digits is 20736, while the sum is 40.

The square root of 91828129 is about 9582.6994630949. The cubic root of 91828129 is about 451.1544497829.

The spelling of 91828129 in words is "ninety-one million, eight hundred twenty-eight thousand, one hundred twenty-nine".