7390721169 has 24 divisors (see below), whose sum is σ = 11996537280. Its totient is φ = 4350389472.

The previous prime is 7390721159. The next prime is 7390721171. The reversal of 7390721169 is 9611270937.

It is not a de Polignac number, because 7390721169 - 2¹² = 7390717073 is a prime.

It is a super-2 number, since 2×7390721169² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7390721119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1370539 + ... + 1375920.

It is an arithmetic number, because the mean of its divisors is an integer number (499855720).

Almost surely, 2^7390721169 is an apocalyptic number.

It is an amenable number.

7390721169 is a deficient number, since it is larger than the sum of its proper divisors (4605816111).

7390721169 is a wasteful number, since it uses less digits than its factorization.

7390721169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746501 (or 2746498 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 7390721169 is about 85969.3036438007. The cubic root of 7390721169 is about 1947.8803326350.

The spelling of 7390721169 in words is "seven billion, three hundred ninety million, seven hundred twenty-one thousand, one hundred sixty-nine".