2642989439 has 8 divisors (see below), whose sum is σ = 2874094128. Its totient is φ = 2420288640.

The previous prime is 2642989423. The next prime is 2642989441. The reversal of 2642989439 is 9349892462.

It is a happy number.

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

It is not a de Polignac number, because 2642989439 - 2⁴ = 2642989423 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 (2642989499) 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, 2100317 + ... + 2101574.

It is an arithmetic number, because the mean of its divisors is an integer number (359261766).

Almost surely, 2^2642989439 is an apocalyptic number.

2642989439 is a deficient number, since it is larger than the sum of its proper divisors (231104689).

2642989439 is a wasteful number, since it uses less digits than its factorization.

2642989439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201945.

The product of its digits is 6718464, while the sum is 56.

The square root of 2642989439 is about 51410.0130227566. The cubic root of 2642989439 is about 1382.6061231752.

The spelling of 2642989439 in words is "two billion, six hundred forty-two million, nine hundred eighty-nine thousand, four hundred thirty-nine".