7439242687 has 4 divisors (see below), whose sum is σ = 7876845216. Its totient is φ = 7001640160.

The previous prime is 7439242651. The next prime is 7439242693. The reversal of 7439242687 is 7862429347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7862429347 = 1381 ⋅5693287.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7439242687 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 (7439242787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218801239 + ... + 218801272.

It is an arithmetic number, because the mean of its divisors is an integer number (1969211304).

Almost surely, 2^7439242687 is an apocalyptic number.

7439242687 is a deficient number, since it is larger than the sum of its proper divisors (437602529).

7439242687 is a wasteful number, since it uses less digits than its factorization.

7439242687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437602528.

The product of its digits is 4064256, while the sum is 52.

The square root of 7439242687 is about 86251.0445559936. The cubic root of 7439242687 is about 1952.1337753453.

The spelling of 7439242687 in words is "seven billion, four hundred thirty-nine million, two hundred forty-two thousand, six hundred eighty-seven".