91088349 has 16 divisors (see below), whose sum is σ = 138253824. Its totient is φ = 52804400.

The previous prime is 91088341. The next prime is 91088369. The reversal of 91088349 is 94388019.

It is not a de Polignac number, because 91088349 - 2³ = 91088341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91088349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91088341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59247 + ... + 60764.

It is an arithmetic number, because the mean of its divisors is an integer number (8640864).

Almost surely, 2^91088349 is an apocalyptic number.

It is an amenable number.

91088349 is a deficient number, since it is larger than the sum of its proper divisors (47165475).

91088349 is a wasteful number, since it uses less digits than its factorization.

91088349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120048.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 91088349 is about 9544.0216366058. The cubic root of 91088349 is about 449.9396610455.

The spelling of 91088349 in words is "ninety-one million, eighty-eight thousand, three hundred forty-nine".