40969191 has 8 divisors (see below), whose sum is σ = 54659200. Its totient is φ = 27295992.

The previous prime is 40969183. The next prime is 40969193. The reversal of 40969191 is 19196904.

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

It is not a de Polignac number, because 40969191 - 2³ = 40969183 is a prime.

It is a super-2 number, since 2×40969191² = 3356949222388962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40969193) 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, 3510 + ... + 9708.

It is an arithmetic number, because the mean of its divisors is an integer number (6832400).

Almost surely, 2^40969191 is an apocalyptic number.

40969191 is a deficient number, since it is larger than the sum of its proper divisors (13690009).

40969191 is a wasteful number, since it uses less digits than its factorization.

40969191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8405.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 40969191 is about 6400.7180065989. The cubic root of 40969191 is about 344.7353315618.

The spelling of 40969191 in words is "forty million, nine hundred sixty-nine thousand, one hundred ninety-one".