40984397 has 2 divisors, whose sum is σ = 40984398. Its totient is φ = 40984396.

The previous prime is 40984393. The next prime is 40984403. The reversal of 40984397 is 79348904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40780996 + 203401 = 6386^2 + 451^2 .

It is a cyclic number.

It is not a de Polignac number, because 40984397 - 2² = 40984393 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 (40984393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20492198 + 20492199.

It is an arithmetic number, because the mean of its divisors is an integer number (20492199).

Almost surely, 2^40984397 is an apocalyptic number.

It is an amenable number.

40984397 is a deficient number, since it is larger than the sum of its proper divisors (1).

40984397 is an equidigital number, since it uses as much as digits as its factorization.

40984397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 40984397 is about 6401.9057318895. The cubic root of 40984397 is about 344.7779765910. Note that the first 3 decimals are identical.

The spelling of 40984397 in words is "forty million, nine hundred eighty-four thousand, three hundred ninety-seven".