2991324249 has 45 divisors (see below), whose sum is σ = 4590102693. Its totient is φ = 1941382728.

The previous prime is 2991324247. The next prime is 2991324251. The reversal of 2991324249 is 9424231992.

The square root of 2991324249 is 54693.

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

2991324249 is a `hidden beast` number, since 2 + 99 + 132 + 424 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (2991324247) and next prime (2991324251).

It is not a de Polignac number, because 2991324249 - 2¹ = 2991324247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2991324241) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 29041932 + ... + 29042034.

Almost surely, 2^2991324249 is an apocalyptic number.

2991324249 is the 54693-rd square number.

2991324249 is the 27347-th centered octagonal number.

It is an amenable number.

2991324249 is a deficient number, since it is larger than the sum of its proper divisors (1598778444).

2991324249 is an frugal number, since it uses more digits than its factorization.

2991324249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 165 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The cubic root of 2991324249 is about 1440.8579392667.

The spelling of 2991324249 in words is "two billion, nine hundred ninety-one million, three hundred twenty-four thousand, two hundred forty-nine".