1239898944 has 112 divisors (see below), whose sum is σ = 3593592000. Its totient is φ = 375545856.

The previous prime is 1239898939. The next prime is 1239898949. The reversal of 1239898944 is 4498989321.

It is an interprime number because it is at equal distance from previous prime (1239898939) and next prime (1239898949).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239898949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88107 + ... + 101205.

Almost surely, 2^1239898944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1239898944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1796796000).

1239898944 is an abundant number, since it is smaller than the sum of its proper divisors (2353693056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1239898944 is a wasteful number, since it uses less digits than its factorization.

1239898944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13160 (or 13150 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 57.

The square root of 1239898944 is about 35212.1987953039. The cubic root of 1239898944 is about 1074.3078851942.

The spelling of 1239898944 in words is "one billion, two hundred thirty-nine million, eight hundred ninety-eight thousand, nine hundred forty-four".