8437708449 has 27 divisors (see below), whose sum is σ = 12399555987. Its totient is φ = 5529056544.

The previous prime is 8437708441. The next prime is 8437708463. The reversal of 8437708449 is 9448077348.

The square root of 8437708449 is 91857.

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

It can be written as a sum of positive squares in only one way, i.e., 7297430625 + 1140277824 = 85425^2 + 33768^2 .

It is not a de Polignac number, because 8437708449 - 2³ = 8437708441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8437708395 and 8437708404.

It is not an unprimeable number, because it can be changed into a prime (8437708441) 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, 18463029 + ... + 18463485.

Almost surely, 2^8437708449 is an apocalyptic number.

8437708449 is the 91857-th square number.

8437708449 is the 45929-th centered octagonal number.

It is an amenable number.

8437708449 is a deficient number, since it is larger than the sum of its proper divisors (3961847538).

8437708449 is an frugal number, since it uses more digits than its factorization.

8437708449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The cubic root of 8437708449 is about 2035.8299772752.

The spelling of 8437708449 in words is "eight billion, four hundred thirty-seven million, seven hundred eight thousand, four hundred forty-nine".