2509699039 has 4 divisors (see below), whose sum is σ = 2516537824. Its totient is φ = 2502860256.

The previous prime is 2509699013. The next prime is 2509699067. The reversal of 2509699039 is 9309969052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2509699039 - 2¹¹ = 2509696991 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 (2509699009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3418842 + ... + 3419575.

It is an arithmetic number, because the mean of its divisors is an integer number (629134456).

Almost surely, 2^2509699039 is an apocalyptic number.

2509699039 is a deficient number, since it is larger than the sum of its proper divisors (6838785).

2509699039 is an equidigital number, since it uses as much as digits as its factorization.

2509699039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6838784.

The product of its (nonzero) digits is 1180980, while the sum is 52.

The square root of 2509699039 is about 50096.8965006816. The cubic root of 2509699039 is about 1358.9616928969.

The spelling of 2509699039 in words is "two billion, five hundred nine million, six hundred ninety-nine thousand, thirty-nine".