91314493 has 2 divisors, whose sum is σ = 91314494. Its totient is φ = 91314492.

The previous prime is 91314481. The next prime is 91314563. The reversal of 91314493 is 39441319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82682649 + 8631844 = 9093^2 + 2938^2 .

It is a cyclic number.

It is not a de Polignac number, because 91314493 - 2¹³ = 91306301 is a prime.

It is equal to p_5288920 and since 91314493 and 5288920 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91314793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45657246 + 45657247.

It is an arithmetic number, because the mean of its divisors is an integer number (45657247).

Almost surely, 2^91314493 is an apocalyptic number.

It is an amenable number.

91314493 is a deficient number, since it is larger than the sum of its proper divisors (1).

91314493 is an equidigital number, since it uses as much as digits as its factorization.

91314493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 91314493 is about 9555.8617089198. The cubic root of 91314493 is about 450.3117066705.

The spelling of 91314493 in words is "ninety-one million, three hundred fourteen thousand, four hundred ninety-three".