40245197 has 2 divisors, whose sum is σ = 40245198. Its totient is φ = 40245196.

The previous prime is 40245187. The next prime is 40245229. The reversal of 40245197 is 79154204.

It is a happy number.

It is an a-pointer prime, because the next prime (40245229) can be obtained adding 40245197 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34703881 + 5541316 = 5891^2 + 2354^2 .

It is a cyclic number.

It is not a de Polignac number, because 40245197 - 2⁴ = 40245181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40245187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122598 + 20122599.

It is an arithmetic number, because the mean of its divisors is an integer number (20122599).

Almost surely, 2^40245197 is an apocalyptic number.

It is an amenable number.

40245197 is a deficient number, since it is larger than the sum of its proper divisors (1).

40245197 is an equidigital number, since it uses as much as digits as its factorization.

40245197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 40245197 is about 6343.9102295036. The cubic root of 40245197 is about 342.6925679313.

The spelling of 40245197 in words is "forty million, two hundred forty-five thousand, one hundred ninety-seven".