40240197 has 24 divisors (see below), whose sum is σ = 61284600. Its totient is φ = 25404288.

The previous prime is 40240181. The next prime is 40240223. The reversal of 40240197 is 79104204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17715681 + 22524516 = 4209^2 + 4746^2 .

It is not a de Polignac number, because 40240197 - 2⁴ = 40240181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40240197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12379 + ... + 15287.

It is an arithmetic number, because the mean of its divisors is an integer number (2553525).

Almost surely, 2^40240197 is an apocalyptic number.

It is an amenable number.

40240197 is a deficient number, since it is larger than the sum of its proper divisors (21044403).

40240197 is a wasteful number, since it uses less digits than its factorization.

40240197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40240197 is about 6343.5161385465. The cubic root of 40240197 is about 342.6783754816.

The spelling of 40240197 in words is "forty million, two hundred forty thousand, one hundred ninety-seven".