2040450639 has 8 divisors (see below), whose sum is σ = 2740174080. Its totient is φ = 1350513816.

The previous prime is 2040450593. The next prime is 2040450673. The reversal of 2040450639 is 9360540402.

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

It is not a de Polignac number, because 2040450639 - 2⁸ = 2040450383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040450539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2446167 + ... + 2447000.

It is an arithmetic number, because the mean of its divisors is an integer number (342521760).

Almost surely, 2^2040450639 is an apocalyptic number.

2040450639 is a deficient number, since it is larger than the sum of its proper divisors (699723441).

2040450639 is a wasteful number, since it uses less digits than its factorization.

2040450639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893309.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 2040450639 is about 45171.3475446549. The cubic root of 2040450639 is about 1268.3585214130.

The spelling of 2040450639 in words is "two billion, forty million, four hundred fifty thousand, six hundred thirty-nine".