91449297 has 8 divisors (see below), whose sum is σ = 135480480. Its totient is φ = 60966180.

The previous prime is 91449269. The next prime is 91449301. The reversal of 91449297 is 79294419.

It is a happy number.

It is not a de Polignac number, because 91449297 - 2⁸ = 91449041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91449227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693479 + ... + 1693532.

It is an arithmetic number, because the mean of its divisors is an integer number (16935060).

Almost surely, 2^91449297 is an apocalyptic number.

It is an amenable number.

91449297 is a deficient number, since it is larger than the sum of its proper divisors (44031183).

91449297 is a wasteful number, since it uses less digits than its factorization.

91449297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387020 (or 3387014 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 91449297 is about 9562.9125793348. The cubic root of 91449297 is about 450.5331902131.

The spelling of 91449297 in words is "ninety-one million, four hundred forty-nine thousand, two hundred ninety-seven".