7149779417 has 4 divisors (see below), whose sum is σ = 7799759376. Its totient is φ = 6499799460.

The previous prime is 7149779389. The next prime is 7149779419.

It is a happy number.

7149779417 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7149779417 - 2³⁰ = 6076037593 is a prime.

It is a super-2 number, since 2×7149779417² (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 (7149779419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324989963 + ... + 324989984.

It is an arithmetic number, because the mean of its divisors is an integer number (1949939844).

Almost surely, 2^7149779417 is an apocalyptic number.

It is an amenable number.

7149779417 is a deficient number, since it is larger than the sum of its proper divisors (649979959).

7149779417 is a wasteful number, since it uses less digits than its factorization.

7149779417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649979958.

The product of its digits is 3111696, while the sum is 56.

The square root of 7149779417 is about 84556.3682817563. The cubic root of 7149779417 is about 1926.4787124265.

The spelling of 7149779417 in words is "seven billion, one hundred forty-nine million, seven hundred seventy-nine thousand, four hundred seventeen".