91905453 has 12 divisors (see below), whose sum is σ = 134623008. Its totient is φ = 60406920.

The previous prime is 91905439. The next prime is 91905461. The reversal of 91905453 is 35450919.

It is not a de Polignac number, because 91905453 - 2¹² = 91901357 is a prime.

It is a super-2 number, since 2×91905453² = 16893224582270418, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91905433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71275 + ... + 72552.

It is an arithmetic number, because the mean of its divisors is an integer number (11218584).

Almost surely, 2^91905453 is an apocalyptic number.

It is an amenable number.

91905453 is a deficient number, since it is larger than the sum of its proper divisors (42717555).

91905453 is a wasteful number, since it uses less digits than its factorization.

91905453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143904 (or 143901 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 91905453 is about 9586.7331766353. The cubic root of 91905453 is about 451.2810459939.

The spelling of 91905453 in words is "ninety-one million, nine hundred five thousand, four hundred fifty-three".