1097990239 has 8 divisors (see below), whose sum is σ = 1112540688. Its totient is φ = 1083505920.

The previous prime is 1097990219. The next prime is 1097990273. The reversal of 1097990239 is 9320997901.

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

It is a cyclic number.

It is not a de Polignac number, because 1097990239 - 2²⁹ = 561119327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1097990192 and 1097990201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097990219) 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, 17349 + ... + 49969.

It is an arithmetic number, because the mean of its divisors is an integer number (139067586).

Almost surely, 2^1097990239 is an apocalyptic number.

1097990239 is a deficient number, since it is larger than the sum of its proper divisors (14550449).

1097990239 is an equidigital number, since it uses as much as digits as its factorization.

1097990239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33065.

The product of its (nonzero) digits is 275562, while the sum is 49.

The square root of 1097990239 is about 33135.9357646649. The cubic root of 1097990239 is about 1031.6510545191.

The spelling of 1097990239 in words is "one billion, ninety-seven million, nine hundred ninety thousand, two hundred thirty-nine".