40398263 has 2 divisors, whose sum is σ = 40398264. Its totient is φ = 40398262.

The previous prime is 40398233. The next prime is 40398289. The reversal of 40398263 is 36289304.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40398263 - 2¹⁴ = 40381879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40398203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20199131 + 20199132.

It is an arithmetic number, because the mean of its divisors is an integer number (20199132).

Almost surely, 2^40398263 is an apocalyptic number.

40398263 is a deficient number, since it is larger than the sum of its proper divisors (1).

40398263 is an equidigital number, since it uses as much as digits as its factorization.

40398263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 40398263 is about 6355.9627909546. The cubic root of 40398263 is about 343.1264766034.

The spelling of 40398263 in words is "forty million, three hundred ninety-eight thousand, two hundred sixty-three".