91454949 has 12 divisors (see below), whose sum is σ = 132227212. Its totient is φ = 60912000.

The previous prime is 91454947. The next prime is 91454963. The reversal of 91454949 is 94945419.

It can be written as a sum of positive squares in 2 ways, for example, as 28965924 + 62489025 = 5382^2 + 7905^2 .

It is not a de Polignac number, because 91454949 - 2¹ = 91454947 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91454947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6579 + ... + 15039.

Almost surely, 2^91454949 is an apocalyptic number.

It is an amenable number.

91454949 is a deficient number, since it is larger than the sum of its proper divisors (40772263).

91454949 is a wasteful number, since it uses less digits than its factorization.

91454949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9668 (or 9665 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 91454949 is about 9563.2080914304. The cubic root of 91454949 is about 450.5424717175.

The spelling of 91454949 in words is "ninety-one million, four hundred fifty-four thousand, nine hundred forty-nine".