7149899684 has 24 divisors (see below), whose sum is σ = 12894431928. Its totient is φ = 3466437120.

The previous prime is 7149899683. The next prime is 7149899689. The reversal of 7149899684 is 4869989417.

It can be written as a sum of positive squares in 4 ways, for example, as 2343528100 + 4806371584 = 48410^2 + 69328^2 .

It is a super-2 number, since 2×7149899684² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7149899684.

It is not an unprimeable number, because it can be changed into a prime (7149899683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39077 + ... + 125804.

It is an arithmetic number, because the mean of its divisors is an integer number (537267997).

Almost surely, 2^7149899684 is an apocalyptic number.

7149899684 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

7149899684 is a deficient number, since it is larger than the sum of its proper divisors (5744532244).

7149899684 is a wasteful number, since it uses less digits than its factorization.

7149899684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165215 (or 165213 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 65.

The square root of 7149899684 is about 84557.0794434150. The cubic root of 7149899684 is about 1926.4895141825.

The spelling of 7149899684 in words is "seven billion, one hundred forty-nine million, eight hundred ninety-nine thousand, six hundred eighty-four".