7427509489 has 3 divisors (see below), whose sum is σ = 7427595673. Its totient is φ = 7427423306.

The previous prime is 7427509487. The next prime is 7427509519. The reversal of 7427509489 is 9849057247.

The square root of 7427509489 is 86183.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 7427509489 - 2¹ = 7427509487 is a prime.

It is a super-2 number, since 2×7427509489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7427509487) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 43092 + ... + 129274.

Almost surely, 2^7427509489 is an apocalyptic number.

7427509489 is the 86183-rd square number.

7427509489 is the 43092-nd centered octagonal number.

It is an amenable number.

7427509489 is a deficient number, since it is larger than the sum of its proper divisors (86184).

7427509489 is an frugal number, since it uses more digits than its factorization.

7427509489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172366 (or 86183 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The cubic root of 7427509489 is about 1951.1069313746.

The spelling of 7427509489 in words is "seven billion, four hundred twenty-seven million, five hundred nine thousand, four hundred eighty-nine".