91140419 has 2 divisors, whose sum is σ = 91140420. Its totient is φ = 91140418.

The previous prime is 91140389. The next prime is 91140437. The reversal of 91140419 is 91404119.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91140419 - 2⁸ = 91140163 is a prime.

It is a super-2 number, since 2×91140419² = 16613151950991122, which contains 22 as substring.

It is a Chen prime.

It is equal to p_5279321 and since 91140419 and 5279321 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 91140391 and 91140400.

It is not a weakly prime, because it can be changed into another prime (91140449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45570209 + 45570210.

It is an arithmetic number, because the mean of its divisors is an integer number (45570210).

Almost surely, 2^91140419 is an apocalyptic number.

91140419 is a deficient number, since it is larger than the sum of its proper divisors (1).

91140419 is an equidigital number, since it uses as much as digits as its factorization.

91140419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 91140419 is about 9546.7491325582. The cubic root of 91140419 is about 450.0253796385.

The spelling of 91140419 in words is "ninety-one million, one hundred forty thousand, four hundred nineteen".