40002650389 has 8 divisors (see below), whose sum is σ = 43328795832. Its totient is φ = 36712079040.

The previous prime is 40002650371. The next prime is 40002650393. The reversal of 40002650389 is 98305620004.

It can be written as a sum of positive squares in 4 ways, for example, as 4117788900 + 35884861489 = 64170^2 + 189433^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40002650389 - 2¹⁷ = 40002519317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40002650339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8891182 + ... + 8895679.

It is an arithmetic number, because the mean of its divisors is an integer number (5416099479).

Almost surely, 2^40002650389 is an apocalyptic number.

It is an amenable number.

40002650389 is a deficient number, since it is larger than the sum of its proper divisors (3326145443).

40002650389 is a wasteful number, since it uses less digits than its factorization.

40002650389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17787047.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 40002650389 in words is "forty billion, two million, six hundred fifty thousand, three hundred eighty-nine".