1098240239 has 4 divisors (see below), whose sum is σ = 1162842624. Its totient is φ = 1033637856.

The previous prime is 1098240233. The next prime is 1098240257. The reversal of 1098240239 is 9320428901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9320428901 = 7 ⋅1331489843.

It is a cyclic number.

It is not a de Polignac number, because 1098240239 - 2²⁰ = 1097191663 is a prime.

It is a super-2 number, since 2×1098240239² = 2412263245117554242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098240233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32301167 + ... + 32301200.

It is an arithmetic number, because the mean of its divisors is an integer number (290710656).

Almost surely, 2^1098240239 is an apocalyptic number.

1098240239 is a deficient number, since it is larger than the sum of its proper divisors (64602385).

1098240239 is an equidigital number, since it uses as much as digits as its factorization.

1098240239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64602384.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1098240239 is about 33139.7078894791. The cubic root of 1098240239 is about 1031.7293470158.

The spelling of 1098240239 in words is "one billion, ninety-eight million, two hundred forty thousand, two hundred thirty-nine".