40343301989 has 2 divisors, whose sum is σ = 40343301990. Its totient is φ = 40343301988.

The previous prime is 40343301967. The next prime is 40343302067. The reversal of 40343301989 is 98910334304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39528199489 + 815102500 = 198817^2 + 28550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40343301989 is a prime.

It is a super-2 number, since 2×40343301989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40343301689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20171650994 + 20171650995.

It is an arithmetic number, because the mean of its divisors is an integer number (20171650995).

Almost surely, 2^40343301989 is an apocalyptic number.

It is an amenable number.

40343301989 is a deficient number, since it is larger than the sum of its proper divisors (1).

40343301989 is an equidigital number, since it uses as much as digits as its factorization.

40343301989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 40343301989 in words is "forty billion, three hundred forty-three million, three hundred one thousand, nine hundred eighty-nine".