1039961808 has 320 divisors, whose sum is σ = 3455136000. Its totient is φ = 297271296.

The previous prime is 1039961807. The next prime is 1039961831. The reversal of 1039961808 is 8081699301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1039961803) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4046416 + ... + 4046672.

It is an arithmetic number, because the mean of its divisors is an integer number (10797300).

Almost surely, 2^1039961808 is an apocalyptic number.

1039961808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1039961808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727568000).

1039961808 is an abundant number, since it is smaller than the sum of its proper divisors (2415174192).

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

1039961808 is a wasteful number, since it uses less digits than its factorization.

1039961808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 1039961808 is about 32248.4388459349. The cubic root of 1039961808 is about 1013.1470015581.

The spelling of 1039961808 in words is "one billion, thirty-nine million, nine hundred sixty-one thousand, eight hundred eight".