40575397 has 2 divisors, whose sum is σ = 40575398. Its totient is φ = 40575396.

The previous prime is 40575389. The next prime is 40575419. The reversal of 40575397 is 79357504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40564161 + 11236 = 6369^2 + 106^2 .

It is a cyclic number.

It is not a de Polignac number, because 40575397 - 2³ = 40575389 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 (40575307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20287698 + 20287699.

It is an arithmetic number, because the mean of its divisors is an integer number (20287699).

Almost surely, 2^40575397 is an apocalyptic number.

It is an amenable number.

40575397 is a deficient number, since it is larger than the sum of its proper divisors (1).

40575397 is an equidigital number, since it uses as much as digits as its factorization.

40575397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 40575397 is about 6369.8820240252. The cubic root of 40575397 is about 343.6272468808.

The spelling of 40575397 in words is "forty million, five hundred seventy-five thousand, three hundred ninety-seven".