40534191 has 6 divisors (see below), whose sum is σ = 58549400. Its totient is φ = 27022788.

The previous prime is 40534181. The next prime is 40534213. The reversal of 40534191 is 19143504.

40534191 is a `hidden beast` number, since 40 + 534 + 1 + 91 = 666.

It is not a de Polignac number, because 40534191 - 2⁵ = 40534159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40534181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2251891 + ... + 2251908.

Almost surely, 2^40534191 is an apocalyptic number.

40534191 is a deficient number, since it is larger than the sum of its proper divisors (18015209).

40534191 is a wasteful number, since it uses less digits than its factorization.

40534191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503805 (or 4503802 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40534191 is about 6366.6467626216. The cubic root of 40534191 is about 343.5108849039.

Adding to 40534191 its reverse (19143504), we get a palindrome (59677695).

It can be divided in two parts, 405 and 34191, that added together give a square (34596 = 186²).

The spelling of 40534191 in words is "forty million, five hundred thirty-four thousand, one hundred ninety-one".