39385442889 has 32 divisors (see below), whose sum is σ = 62943471360. Its totient is φ = 24196195584.

The previous prime is 39385442849. The next prime is 39385442897. The reversal of 39385442889 is 98824458393.

39385442889 is a `hidden beast` number, since 3 + 9 + 3 + 8 + 544 + 2 + 8 + 89 = 666.

It is not a de Polignac number, because 39385442889 - 2¹⁷ = 39385311817 is a prime.

It is a super-2 number, since 2×39385442889² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39385442849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113532 + ... + 302754.

It is an arithmetic number, because the mean of its divisors is an integer number (1966983480).

Almost surely, 2^39385442889 is an apocalyptic number.

39385442889 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

39385442889 is a deficient number, since it is larger than the sum of its proper divisors (23558028471).

39385442889 is a wasteful number, since it uses less digits than its factorization.

39385442889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189838 (or 189832 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The spelling of 39385442889 in words is "thirty-nine billion, three hundred eighty-five million, four hundred forty-two thousand, eight hundred eighty-nine".