40116397 has 2 divisors, whose sum is σ = 40116398. Its totient is φ = 40116396.

The previous prime is 40116383. The next prime is 40116407. The reversal of 40116397 is 79361104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33246756 + 6869641 = 5766^2 + 2621^2 .

It is a cyclic number.

It is not a de Polignac number, because 40116397 - 2⁷ = 40116269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40116997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20058198 + 20058199.

It is an arithmetic number, because the mean of its divisors is an integer number (20058199).

Almost surely, 2^40116397 is an apocalyptic number.

It is an amenable number.

40116397 is a deficient number, since it is larger than the sum of its proper divisors (1).

40116397 is an equidigital number, since it uses as much as digits as its factorization.

40116397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 40116397 is about 6333.7506266035. The cubic root of 40116397 is about 342.3265948716.

The spelling of 40116397 in words is "forty million, one hundred sixteen thousand, three hundred ninety-seven".