40106191 has 8 divisors (see below), whose sum is σ = 40636800. Its totient is φ = 39578400.

The previous prime is 40106189. The next prime is 40106197. The reversal of 40106191 is 19160104.

40106191 = T₁₆ + T₁₇ + ... + T₆₂₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40106191 - 2¹ = 40106189 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 (40106197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47965 + ... + 48793.

It is an arithmetic number, because the mean of its divisors is an integer number (5079600).

Almost surely, 2^40106191 is an apocalyptic number.

40106191 is a deficient number, since it is larger than the sum of its proper divisors (530609).

40106191 is a wasteful number, since it uses less digits than its factorization.

40106191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 40106191 is about 6332.9448915966. The cubic root of 40106191 is about 342.2975620088.

Adding to 40106191 its reverse (19160104), we get a palindrome (59266295).

It can be divided in two parts, 4010 and 6191, that added together give a palindrome (10201).

The spelling of 40106191 in words is "forty million, one hundred six thousand, one hundred ninety-one".