91454039 has 4 divisors (see below), whose sum is σ = 91548624. Its totient is φ = 91359456.

The previous prime is 91454021. The next prime is 91454053. The reversal of 91454039 is 93045419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91454039 - 2¹⁶ = 91388503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91454059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45827 + ... + 47780.

It is an arithmetic number, because the mean of its divisors is an integer number (22887156).

Almost surely, 2^91454039 is an apocalyptic number.

91454039 is a deficient number, since it is larger than the sum of its proper divisors (94585).

91454039 is an equidigital number, since it uses as much as digits as its factorization.

91454039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94584.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 91454039 is about 9563.1605131358. The cubic root of 91454039 is about 450.5409773751.

The spelling of 91454039 in words is "ninety-one million, four hundred fifty-four thousand, thirty-nine".