3129899448 has 64 divisors (see below), whose sum is σ = 8437514400. Its totient is φ = 961804800.

The previous prime is 3129899441. The next prime is 3129899453. The reversal of 3129899448 is 8449989213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129899441) 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, 252598 + ... + 264698.

Almost surely, 2^3129899448 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 3129899448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4218757200).

3129899448 is an abundant number, since it is smaller than the sum of its proper divisors (5307614952).

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

3129899448 is a wasteful number, since it uses less digits than its factorization.

3129899448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12952 (or 12948 counting only the distinct ones).

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

The square root of 3129899448 is about 55945.5042697802. The cubic root of 3129899448 is about 1462.7725273708.

The spelling of 3129899448 in words is "three billion, one hundred twenty-nine million, eight hundred ninety-nine thousand, four hundred forty-eight".