91244403 has 12 divisors (see below), whose sum is σ = 138734440. Its totient is φ = 57627936.

The previous prime is 91244399. The next prime is 91244407. The reversal of 91244403 is 30444219.

It is an interprime number because it is at equal distance from previous prime (91244399) and next prime (91244407).

It is not a de Polignac number, because 91244403 - 2² = 91244399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91244407) 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, 266626 + ... + 266967.

Almost surely, 2^91244403 is an apocalyptic number.

91244403 is a deficient number, since it is larger than the sum of its proper divisors (47490037).

91244403 is a wasteful number, since it uses less digits than its factorization.

91244403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533618 (or 533615 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 91244403 is about 9552.1936224095. The cubic root of 91244403 is about 450.1964623635.

The spelling of 91244403 in words is "ninety-one million, two hundred forty-four thousand, four hundred three".