40363789 has 2 divisors, whose sum is σ = 40363790. Its totient is φ = 40363788.

The previous prime is 40363787. The next prime is 40363811. The reversal of 40363789 is 98736304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33154564 + 7209225 = 5758^2 + 2685^2 .

It is a cyclic number.

It is not a de Polignac number, because 40363789 - 2¹ = 40363787 is a prime.

Together with 40363787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40363783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20181894 + 20181895.

It is an arithmetic number, because the mean of its divisors is an integer number (20181895).

Almost surely, 2^40363789 is an apocalyptic number.

It is an amenable number.

40363789 is a deficient number, since it is larger than the sum of its proper divisors (1).

40363789 is an equidigital number, since it uses as much as digits as its factorization.

40363789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 40363789 is about 6353.2502705308. The cubic root of 40363789 is about 343.0288460980.

The spelling of 40363789 in words is "forty million, three hundred sixty-three thousand, seven hundred eighty-nine".