91449436 has 24 divisors (see below), whose sum is σ = 174715184. Its totient is φ = 41627520.

The previous prime is 91449419. The next prime is 91449437. The reversal of 91449436 is 63494419.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91449437) 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, 8250 + ... + 15841.

Almost surely, 2^91449436 is an apocalyptic number.

It is an amenable number.

91449436 is a deficient number, since it is larger than the sum of its proper divisors (83265748).

91449436 is a wasteful number, since it uses less digits than its factorization.

91449436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24181 (or 24179 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 91449436 is about 9562.9198469923. The cubic root of 91449436 is about 450.5334184784.

The spelling of 91449436 in words is "ninety-one million, four hundred forty-nine thousand, four hundred thirty-six".