40389046289 has 4 divisors (see below), whose sum is σ = 40781173056. Its totient is φ = 39996919524.

The previous prime is 40389046279. The next prime is 40389046319. The reversal of 40389046289 is 98264098304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40389046289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40389046289.

It is not an unprimeable number, because it can be changed into a prime (40389046279) 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 in 3 ways as a sum of consecutive naturals, for example, 196063229 + ... + 196063434.

It is an arithmetic number, because the mean of its divisors is an integer number (10195293264).

Almost surely, 2^40389046289 is an apocalyptic number.

It is an amenable number.

40389046289 is a deficient number, since it is larger than the sum of its proper divisors (392126767).

40389046289 is a wasteful number, since it uses less digits than its factorization.

40389046289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392126766.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 40389046289 in words is "forty billion, three hundred eighty-nine million, forty-six thousand, two hundred eighty-nine".