7424493391 has 16 divisors (see below), whose sum is σ = 8792396800. Its totient is φ = 6137153568.

The previous prime is 7424493367. The next prime is 7424493413. The reversal of 7424493391 is 1933944247.

It is not a de Polignac number, because 7424493391 - 2⁹ = 7424492879 is a prime.

It is a super-2 number, since 2×7424493391² (a number of 21 digits) contains 22 as substring.

It is the 86166-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7424493301) by changing a digit.

It is a nontrivial repunit in base 86165.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132336 + ... + 179893.

It is an arithmetic number, because the mean of its divisors is an integer number (549524800).

Almost surely, 2^7424493391 is an apocalyptic number.

7424493391 is a deficient number, since it is larger than the sum of its proper divisors (1367903409).

7424493391 is a wasteful number, since it uses less digits than its factorization.

7424493391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312358.

The product of its digits is 653184, while the sum is 46.

The square root of 7424493391 is about 86165.5000043521. The cubic root of 7424493391 is about 1950.8427994812.

The spelling of 7424493391 in words is "seven billion, four hundred twenty-four million, four hundred ninety-three thousand, three hundred ninety-one".