530139803449 has 9 divisors (see below), whose sum is σ = 535412503503. Its totient is φ = 524918548152.

The previous prime is 530139803441. The next prime is 530139803509. The reversal of 530139803449 is 944308931035.

The square root of 530139803449 is 728107.

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., 185453393449 + 344686410000 = 430643^2 + 587100^2 .

It is not a de Polignac number, because 530139803449 - 2³ = 530139803441 is a prime.

It is a super-2 number, since 2×530139803449² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (530139803441) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 74991487 + ... + 74998555.

It is an arithmetic number, because the mean of its divisors is an integer number (59490278167).

Almost surely, 2^530139803449 is an apocalyptic number.

530139803449 is the 728107-th square number.

530139803449 is the 364054-th centered octagonal number.

It is an amenable number.

530139803449 is a deficient number, since it is larger than the sum of its proper divisors (5272700054).

530139803449 is an frugal number, since it uses more digits than its factorization.

530139803449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344 (or 7172 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

Multiplying 530139803449 by its sum of digits (49), we get a square (25976850369001 = 5096749²).

The spelling of 530139803449 in words is "five hundred thirty billion, one hundred thirty-nine million, eight hundred three thousand, four hundred forty-nine".