91841429 has 4 divisors (see below), whose sum is σ = 97243884. Its totient is φ = 86438976.

The previous prime is 91841401. The next prime is 91841473. The reversal of 91841429 is 92414819.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92414819 = 7 ⋅13202117.

It can be written as a sum of positive squares in 2 ways, for example, as 74218225 + 17623204 = 8615^2 + 4198^2 .

It is a cyclic number.

It is not a de Polignac number, because 91841429 - 2²⁰ = 90792853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91841392 and 91841401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91841479) 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, 2701202 + ... + 2701235.

It is an arithmetic number, because the mean of its divisors is an integer number (24310971).

Almost surely, 2^91841429 is an apocalyptic number.

It is an amenable number.

91841429 is a deficient number, since it is larger than the sum of its proper divisors (5402455).

91841429 is a wasteful number, since it uses less digits than its factorization.

91841429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5402454.

The product of its digits is 20736, while the sum is 38.

The square root of 91841429 is about 9583.3933969132. The cubic root of 91841429 is about 451.1762298358.

The spelling of 91841429 in words is "ninety-one million, eight hundred forty-one thousand, four hundred twenty-nine".