1093390923 has 4 divisors (see below), whose sum is σ = 1457854568. Its totient is φ = 728927280.

The previous prime is 1093390913. The next prime is 1093390927. The reversal of 1093390923 is 3290933901.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1093390923 - 2¹⁴ = 1093374539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1093390927) 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, 182231818 + ... + 182231823.

It is an arithmetic number, because the mean of its divisors is an integer number (364463642).

Almost surely, 2^1093390923 is an apocalyptic number.

1093390923 is a deficient number, since it is larger than the sum of its proper divisors (364463645).

1093390923 is an equidigital number, since it uses as much as digits as its factorization.

1093390923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364463644.

The product of its (nonzero) digits is 39366, while the sum is 39.

The square root of 1093390923 is about 33066.4622087093. The cubic root of 1093390923 is about 1030.2085614675.

The spelling of 1093390923 in words is "one billion, ninety-three million, three hundred ninety thousand, nine hundred twenty-three".