40354191 has 12 divisors (see below), whose sum is σ = 58503432. Its totient is φ = 26804016.

The previous prime is 40354189. The next prime is 40354207. The reversal of 40354191 is 19145304.

It is not a de Polignac number, because 40354191 - 2¹ = 40354189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40354091) 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, 5601 + ... + 10586.

It is an arithmetic number, because the mean of its divisors is an integer number (4875286).

Almost surely, 2^40354191 is an apocalyptic number.

40354191 is a deficient number, since it is larger than the sum of its proper divisors (18149241).

40354191 is a wasteful number, since it uses less digits than its factorization.

40354191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16470 (or 16467 counting only the distinct ones).

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

The square root of 40354191 is about 6352.4948642246. The cubic root of 40354191 is about 343.0016546314.

Adding to 40354191 its reverse (19145304), we get a palindrome (59499495).

The spelling of 40354191 in words is "forty million, three hundred fifty-four thousand, one hundred ninety-one".