40544197 has 2 divisors, whose sum is σ = 40544198. Its totient is φ = 40544196.

The previous prime is 40544183. The next prime is 40544209. The reversal of 40544197 is 79144504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24910081 + 15634116 = 4991^2 + 3954^2 .

It is a cyclic number.

It is not a de Polignac number, because 40544197 - 2⁷ = 40544069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40544177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20272098 + 20272099.

It is an arithmetic number, because the mean of its divisors is an integer number (20272099).

Almost surely, 2^40544197 is an apocalyptic number.

It is an amenable number.

40544197 is a deficient number, since it is larger than the sum of its proper divisors (1).

40544197 is an equidigital number, since it uses as much as digits as its factorization.

40544197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 40544197 is about 6367.4325281074. The cubic root of 40544197 is about 343.5391481803.

The spelling of 40544197 in words is "forty million, five hundred forty-four thousand, one hundred ninety-seven".