7149647897 has 8 divisors (see below), whose sum is σ = 8179397376. Its totient is φ = 6121991232.

The previous prime is 7149647881. The next prime is 7149647917. The reversal of 7149647897 is 7987469417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7149647897 - 2⁴ = 7149647881 is a prime.

It is a super-2 number, since 2×7149647897² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7149647837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515873 + ... + 529550.

It is an arithmetic number, because the mean of its divisors is an integer number (1022424672).

Almost surely, 2^7149647897 is an apocalyptic number.

It is an amenable number.

7149647897 is a deficient number, since it is larger than the sum of its proper divisors (1029749479).

7149647897 is a wasteful number, since it uses less digits than its factorization.

7149647897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046407.

The product of its digits is 21337344, while the sum is 62.

The square root of 7149647897 is about 84555.5905721201. The cubic root of 7149647897 is about 1926.4668998461.

The spelling of 7149647897 in words is "seven billion, one hundred forty-nine million, six hundred forty-seven thousand, eight hundred ninety-seven".