5429398631449 has 27 divisors (see below), whose sum is σ = 6146689932957. Its totient is φ = 4793235148416.

The previous prime is 5429398631441. The next prime is 5429398631473. The reversal of 5429398631449 is 9441368939245.

The square root of 5429398631449 is 2330107.

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

It can be written as a sum of positive squares in 4 ways, for example, as 296908381449 + 5132490250000 = 544893^2 + 2265500^2 .

It is not a de Polignac number, because 5429398631449 - 2³ = 5429398631441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5429398631441) 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, 696698097 + ... + 696705889.

Almost surely, 2^{5429398631449} is an apocalyptic number.

5429398631449 is the 2330107-th square number.

5429398631449 is the 1165054-th centered octagonal number.

It is an amenable number.

5429398631449 is a deficient number, since it is larger than the sum of its proper divisors (717291301508).

5429398631449 is an frugal number, since it uses more digits than its factorization.

5429398631449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15658 (or 7829 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 67.

The spelling of 5429398631449 in words is "five trillion, four hundred twenty-nine billion, three hundred ninety-eight million, six hundred thirty-one thousand, four hundred forty-nine".