7399131136 has 72 divisors (see below), whose sum is σ = 15698976930. Its totient is φ = 3474391040.

The previous prime is 7399131121. The next prime is 7399131139. The reversal of 7399131136 is 6311319937.

It can be written as a sum of positive squares in 3 ways, for example, as 6121497600 + 1277633536 = 78240^2 + 35744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7399131092 and 7399131101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7399131139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16049946 + ... + 16050406.

Almost surely, 2^7399131136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7399131136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7849488465).

7399131136 is an abundant number, since it is smaller than the sum of its proper divisors (8299845794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7399131136 is an frugal number, since it uses more digits than its factorization.

7399131136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 480 counting only the distinct ones).

The product of its digits is 91854, while the sum is 43.

The square root of 7399131136 is about 86018.2023527579. The cubic root of 7399131136 is about 1948.6188893232.

The spelling of 7399131136 in words is "seven billion, three hundred ninety-nine million, one hundred thirty-one thousand, one hundred thirty-six".