12495439089 has 27 divisors (see below), whose sum is σ = 20999682873. Its totient is φ = 7138909512.

The previous prime is 12495439067. The next prime is 12495439109. The reversal of 12495439089 is 98093459421.

The square root of 12495439089 is 111783.

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

12495439089 is a `hidden beast` number, since 1 + 2 + 4 + 9 + 543 + 90 + 8 + 9 = 666.

It is not a de Polignac number, because 12495439089 - 2¹⁷ = 12495308017 is a prime.

It is a super-2 number, since 2×12495439089² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12495439039) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2344782 + ... + 2350104.

Almost surely, 2^12495439089 is an apocalyptic number.

12495439089 is the 111783-rd square number.

12495439089 is the 55892-nd centered octagonal number.

It is an amenable number.

12495439089 is a deficient number, since it is larger than the sum of its proper divisors (8504243784).

12495439089 is an frugal number, since it uses more digits than its factorization.

12495439089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666 (or 5333 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

It can be divided in two parts, 12495 and 439089, that added together give a square (451584 = 672²).

The spelling of 12495439089 in words is "twelve billion, four hundred ninety-five million, four hundred thirty-nine thousand, eighty-nine".