7149886249 has 9 divisors (see below), whose sum is σ = 7859988381. Its totient is φ = 6499051020.

The previous prime is 7149886223. The next prime is 7149886291. The reversal of 7149886249 is 9426889417.

The square root of 7149886249 is 84557.

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

7149886249 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7149886249 - 2⁵ = 7149886217 is a prime.

It is a super-2 number, since 2×7149886249² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7149886193 and 7149886202.

It is not an unprimeable number, because it can be changed into a prime (7149886349) 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, 926284 + ... + 933970.

Almost surely, 2^7149886249 is an apocalyptic number.

7149886249 is the 84557-th square number.

7149886249 is the 42279-th centered octagonal number.

It is an amenable number.

7149886249 is a deficient number, since it is larger than the sum of its proper divisors (710102132).

7149886249 is an frugal number, since it uses more digits than its factorization.

7149886249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15396 (or 7698 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The cubic root of 7149886249 is about 1926.4883075267.

It can be divided in two parts, 7149 and 886249, that added together give a palindrome (893398).

The spelling of 7149886249 in words is "seven billion, one hundred forty-nine million, eight hundred eighty-six thousand, two hundred forty-nine".