1089309939 has 8 divisors (see below), whose sum is σ = 1452810960. Its totient is φ = 726007776.

The previous prime is 1089309917. The next prime is 1089309967. The reversal of 1089309939 is 9399039801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1089309939 - 2⁹ = 1089309427 is a prime.

It is a super-2 number, since 2×1089309939² = 2373192286408367442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1089309891 and 1089309900.

It is not an unprimeable number, because it can be changed into a prime (1089309839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36424 + ... + 59205.

It is an arithmetic number, because the mean of its divisors is an integer number (181601370).

Almost surely, 2^1089309939 is an apocalyptic number.

1089309939 is a deficient number, since it is larger than the sum of its proper divisors (363501021).

1089309939 is an equidigital number, since it uses as much as digits as its factorization.

1089309939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99429.

The product of its (nonzero) digits is 472392, while the sum is 51.

The square root of 1089309939 is about 33004.6957113681. The cubic root of 1089309939 is about 1028.9252430247.

The spelling of 1089309939 in words is "one billion, eighty-nine million, three hundred nine thousand, nine hundred thirty-nine".