2439521499 has 12 divisors (see below), whose sum is σ = 3368728376. Its totient is φ = 1570265088.

The previous prime is 2439521453. The next prime is 2439521503. The reversal of 2439521499 is 9941259342.

It is not a de Polignac number, because 2439521499 - 2¹⁵ = 2439488731 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2439521419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480934 + ... + 485979.

Almost surely, 2^2439521499 is an apocalyptic number.

2439521499 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2439521499 is a deficient number, since it is larger than the sum of its proper divisors (929206877).

2439521499 is an equidigital number, since it uses as much as digits as its factorization.

2439521499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966974 (or 966945 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 2439521499 is about 49391.5124186332. The cubic root of 2439521499 is about 1346.1750898419.

The spelling of 2439521499 in words is "two billion, four hundred thirty-nine million, five hundred twenty-one thousand, four hundred ninety-nine".