40797697 has 2 divisors, whose sum is σ = 40797698. Its totient is φ = 40797696.

The previous prime is 40797677. The next prime is 40797749. The reversal of 40797697 is 79679704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39237696 + 1560001 = 6264^2 + 1249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40797697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40797697.

It is not a weakly prime, because it can be changed into another prime (40797667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20398848 + 20398849.

It is an arithmetic number, because the mean of its divisors is an integer number (20398849).

Almost surely, 2^40797697 is an apocalyptic number.

It is an amenable number.

40797697 is a deficient number, since it is larger than the sum of its proper divisors (1).

40797697 is an equidigital number, since it uses as much as digits as its factorization.

40797697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 40797697 is about 6387.3074922067. The cubic root of 40797697 is about 344.2536466454.

The spelling of 40797697 in words is "forty million, seven hundred ninety-seven thousand, six hundred ninety-seven".