91454399 has 2 divisors, whose sum is σ = 91454400. Its totient is φ = 91454398.

The previous prime is 91454393. The next prime is 91454411. The reversal of 91454399 is 99345419.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91454399 is a prime.

It is a super-3 number, since 3×91454399³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91454393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45727199 + 45727200.

It is an arithmetic number, because the mean of its divisors is an integer number (45727200).

Almost surely, 2^91454399 is an apocalyptic number.

91454399 is a deficient number, since it is larger than the sum of its proper divisors (1).

91454399 is an equidigital number, since it uses as much as digits as its factorization.

91454399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 44.

The square root of 91454399 is about 9563.1793353466. The cubic root of 91454399 is about 450.5415685447.

The spelling of 91454399 in words is "ninety-one million, four hundred fifty-four thousand, three hundred ninety-nine".