3899398776 has 64 divisors (see below), whose sum is σ = 11998156800. Its totient is φ = 1028412288.

The previous prime is 3899398687. The next prime is 3899398777. The reversal of 3899398776 is 6778939983.

It is a self number, because there is not a number n which added to its sum of digits gives 3899398776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899398777) 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, 890536 + ... + 894903.

It is an arithmetic number, because the mean of its divisors is an integer number (187471200).

Almost surely, 2^3899398776 is an apocalyptic number.

It is an amenable number.

3899398776 is an abundant number, since it is smaller than the sum of its proper divisors (8098758024).

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

3899398776 is a wasteful number, since it uses less digits than its factorization.

3899398776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785468 (or 1785464 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 69.

The square root of 3899398776 is about 62445.1661539947. The cubic root of 3899398776 is about 1573.9800267310.

The spelling of 3899398776 in words is "three billion, eight hundred ninety-nine million, three hundred ninety-eight thousand, seven hundred seventy-six".