3855399489 has 12 divisors (see below), whose sum is σ = 5622978816. Its totient is φ = 2545311672.

The previous prime is 3855399473. The next prime is 3855399503. The reversal of 3855399489 is 9849935583.

3855399489 is a `hidden beast` number, since 3 + 8 + 5 + 539 + 94 + 8 + 9 = 666.

3855399489 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3855399489 - 2⁴ = 3855399473 is a prime.

It is a super-2 number, since 2×3855399489² = 29728210439562922242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3855399469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2078577 + ... + 2080430.

It is an arithmetic number, because the mean of its divisors is an integer number (468581568).

Almost surely, 2^3855399489 is an apocalyptic number.

It is an amenable number.

3855399489 is a deficient number, since it is larger than the sum of its proper divisors (1767579327).

3855399489 is a wasteful number, since it uses less digits than its factorization.

3855399489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159116 (or 4159113 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 63.

The square root of 3855399489 is about 62091.8633075220. The cubic root of 3855399489 is about 1568.0375617097.

The spelling of 3855399489 in words is "three billion, eight hundred fifty-five million, three hundred ninety-nine thousand, four hundred eighty-nine".