1097729393 has 4 divisors (see below), whose sum is σ = 1101046128. Its totient is φ = 1094412660.

The previous prime is 1097729387. The next prime is 1097729417. The reversal of 1097729393 is 3939277901.

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 a cyclic number.

It is not a de Polignac number, because 1097729393 - 2⁴ = 1097729377 is a prime.

It is a super-2 number, since 2×1097729393² = 2410019640512296898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1097729323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1657871 + ... + 1658532.

It is an arithmetic number, because the mean of its divisors is an integer number (275261532).

Almost surely, 2^1097729393 is an apocalyptic number.

It is an amenable number.

1097729393 is a deficient number, since it is larger than the sum of its proper divisors (3316735).

1097729393 is an equidigital number, since it uses as much as digits as its factorization.

1097729393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316734.

The product of its (nonzero) digits is 642978, while the sum is 50.

The square root of 1097729393 is about 33131.9995321743. Note that the first 3 decimals coincide. The cubic root of 1097729393 is about 1031.5693527109.

The spelling of 1097729393 in words is "one billion, ninety-seven million, seven hundred twenty-nine thousand, three hundred ninety-three".