383906897439 has 32 divisors (see below), whose sum is σ = 581683334400. Its totient is φ = 223268762880.

The previous prime is 383906897417. The next prime is 383906897447. The reversal of 383906897439 is 934798609383.

It is a de Polignac number, because none of the positive numbers 2^k-383906897439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383906897449) 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, 330297 + ... + 936434.

It is an arithmetic number, because the mean of its divisors is an integer number (18177604200).

Almost surely, 2^383906897439 is an apocalyptic number.

383906897439 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

383906897439 is a deficient number, since it is larger than the sum of its proper divisors (197776436961).

383906897439 is a wasteful number, since it uses less digits than its factorization.

383906897439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267175.

The product of its (nonzero) digits is 211631616, while the sum is 69.

The spelling of 383906897439 in words is "three hundred eighty-three billion, nine hundred six million, eight hundred ninety-seven thousand, four hundred thirty-nine".