40389475969 has 2 divisors, whose sum is σ = 40389475970. Its totient is φ = 40389475968.

The previous prime is 40389475957. The next prime is 40389475981. The reversal of 40389475969 is 96957498304.

It is a balanced prime because it is at equal distance from previous prime (40389475957) and next prime (40389475981).

It can be written as a sum of positive squares in only one way, i.e., 37133290000 + 3256185969 = 192700^2 + 57063^2 .

It is a cyclic number.

It is not a de Polignac number, because 40389475969 - 2¹³ = 40389467777 is a prime.

It is a super-2 number, since 2×40389475969² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40389475969.

It is not a weakly prime, because it can be changed into another prime (40389475999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20194737984 + 20194737985.

It is an arithmetic number, because the mean of its divisors is an integer number (20194737985).

Almost surely, 2^40389475969 is an apocalyptic number.

It is an amenable number.

40389475969 is a deficient number, since it is larger than the sum of its proper divisors (1).

40389475969 is an equidigital number, since it uses as much as digits as its factorization.

40389475969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 40389475969 in words is "forty billion, three hundred eighty-nine million, four hundred seventy-five thousand, nine hundred sixty-nine".