40663453 has 2 divisors, whose sum is σ = 40663454. Its totient is φ = 40663452.

The previous prime is 40663411. The next prime is 40663457. The reversal of 40663453 is 35436604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 252004 = 6357^2 + 502^2 .

It is a cyclic number.

It is not a de Polignac number, because 40663453 - 2¹³ = 40655261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40663457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20331726 + 20331727.

It is an arithmetic number, because the mean of its divisors is an integer number (20331727).

Almost surely, 2^40663453 is an apocalyptic number.

It is an amenable number.

40663453 is a deficient number, since it is larger than the sum of its proper divisors (1).

40663453 is an equidigital number, since it uses as much as digits as its factorization.

40663453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 40663453 is about 6376.7901800200. The cubic root of 40663453 is about 343.8756451769.

The spelling of 40663453 in words is "forty million, six hundred sixty-three thousand, four hundred fifty-three".