7489690840 has 64 divisors (see below), whose sum is σ = 17053185600. Its totient is φ = 2960229888.

The previous prime is 7489690787. The next prime is 7489690841. The reversal of 7489690840 is 480969847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7489690841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1728757 + ... + 1733083.

It is an arithmetic number, because the mean of its divisors is an integer number (266456025).

Almost surely, 2^7489690840 is an apocalyptic number.

It is an amenable number.

7489690840 is an abundant number, since it is smaller than the sum of its proper divisors (9563494760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7489690840 is a wasteful number, since it uses less digits than its factorization.

7489690840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4844 (or 4840 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The square root of 7489690840 is about 86542.9999480027. Note that the first 4 decimals coincide. The cubic root of 7489690840 is about 1956.5365427420.

The spelling of 7489690840 in words is "seven billion, four hundred eighty-nine million, six hundred ninety thousand, eight hundred forty".