91629313 has 2 divisors, whose sum is σ = 91629314. Its totient is φ = 91629312.

The previous prime is 91629311. The next prime is 91629341. The reversal of 91629313 is 31392619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88962624 + 2666689 = 9432^2 + 1633^2 .

It is an emirp because it is prime and its reverse (31392619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91629313 - 2¹ = 91629311 is a prime.

Together with 91629311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (91629311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45814656 + 45814657.

It is an arithmetic number, because the mean of its divisors is an integer number (45814657).

Almost surely, 2^91629313 is an apocalyptic number.

It is an amenable number.

91629313 is a deficient number, since it is larger than the sum of its proper divisors (1).

91629313 is an equidigital number, since it uses as much as digits as its factorization.

91629313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 34.

The square root of 91629313 is about 9572.3201471744. The cubic root of 91629313 is about 450.8286181239.

The spelling of 91629313 in words is "ninety-one million, six hundred twenty-nine thousand, three hundred thirteen".