91829313 has 6 divisors (see below), whose sum is σ = 132642354. Its totient is φ = 61219536.

The previous prime is 91829303. The next prime is 91829321. The reversal of 91829313 is 31392819.

It can be written as a sum of positive squares in only one way, i.e., 90782784 + 1046529 = 9528^2 + 1023^2 .

It is not a de Polignac number, because 91829313 - 2⁶ = 91829249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91829303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5101620 + ... + 5101637.

It is an arithmetic number, because the mean of its divisors is an integer number (22107059).

Almost surely, 2^91829313 is an apocalyptic number.

It is an amenable number.

91829313 is a deficient number, since it is larger than the sum of its proper divisors (40813041).

91829313 is a wasteful number, since it uses less digits than its factorization.

91829313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10203263 (or 10203260 counting only the distinct ones).

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

The square root of 91829313 is about 9582.7612408950. The cubic root of 91829313 is about 451.1563887841.

The spelling of 91829313 in words is "ninety-one million, eight hundred twenty-nine thousand, three hundred thirteen".