40743397 has 2 divisors, whose sum is σ = 40743398. Its totient is φ = 40743396.

The previous prime is 40743383. The next prime is 40743431. The reversal of 40743397 is 79334704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38328481 + 2414916 = 6191^2 + 1554^2 .

It is a cyclic number.

It is not a de Polignac number, because 40743397 - 2¹⁵ = 40710629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40743337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20371698 + 20371699.

It is an arithmetic number, because the mean of its divisors is an integer number (20371699).

Almost surely, 2^40743397 is an apocalyptic number.

It is an amenable number.

40743397 is a deficient number, since it is larger than the sum of its proper divisors (1).

40743397 is an equidigital number, since it uses as much as digits as its factorization.

40743397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 40743397 is about 6383.0554595742. The cubic root of 40743397 is about 344.1008498479.

The spelling of 40743397 in words is "forty million, seven hundred forty-three thousand, three hundred ninety-seven".