7197449121 has 6 divisors (see below), whose sum is σ = 10396315410. Its totient is φ = 4798299408.

The previous prime is 7197449113. The next prime is 7197449123. The reversal of 7197449121 is 1219447917.

7197449121 is a `hidden beast` number, since 7 + 197 + 449 + 12 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6290234721 + 907214400 = 79311^2 + 30120^2 .

It is not a de Polignac number, because 7197449121 - 2³ = 7197449113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7197449123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 399858276 + ... + 399858293.

It is an arithmetic number, because the mean of its divisors is an integer number (1732719235).

Almost surely, 2^7197449121 is an apocalyptic number.

It is an amenable number.

7197449121 is a deficient number, since it is larger than the sum of its proper divisors (3198866289).

7197449121 is a wasteful number, since it uses less digits than its factorization.

7197449121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799716575 (or 799716572 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 7197449121 is about 84837.7812121463. The cubic root of 7197449121 is about 1930.7507009237.

The spelling of 7197449121 in words is "seven billion, one hundred ninety-seven million, four hundred forty-nine thousand, one hundred twenty-one".