1091424079 has 4 divisors (see below), whose sum is σ = 1102230360. Its totient is φ = 1080617800.

The previous prime is 1091424073. The next prime is 1091424127. The reversal of 1091424079 is 9704241901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9704241901 = 60923 ⋅159287.

It is a cyclic number.

It is not a de Polignac number, because 1091424079 - 2¹⁹ = 1090899791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091424073) 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, 5402989 + ... + 5403190.

It is an arithmetic number, because the mean of its divisors is an integer number (275557590).

Almost surely, 2^1091424079 is an apocalyptic number.

1091424079 is a deficient number, since it is larger than the sum of its proper divisors (10806281).

1091424079 is a wasteful number, since it uses less digits than its factorization.

1091424079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10806280.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1091424079 is about 33036.7080533155. The cubic root of 1091424079 is about 1029.5904611831.

The spelling of 1091424079 in words is "one billion, ninety-one million, four hundred twenty-four thousand, seventy-nine".