2439945 has 24 divisors (see below), whose sum is σ = 4305600. Its totient is φ = 1277856.

The previous prime is 2439929. The next prime is 2439953. The reversal of 2439945 is 5499342.

It is not a de Polignac number, because 2439945 - 2⁴ = 2439929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2196 + ... + 3114.

It is an arithmetic number, because the mean of its divisors is an integer number (179400).

2^2439945 is an apocalyptic number.

It is an amenable number.

2439945 is a deficient number, since it is larger than the sum of its proper divisors (1865655).

2439945 is a wasteful number, since it uses less digits than its factorization.

2439945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 986 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2439945 is about 1562.0323300111. The cubic root of 2439945 is about 134.6252984012.

The spelling of 2439945 in words is "two million, four hundred thirty-nine thousand, nine hundred forty-five".