399083838549 has 32 divisors (see below), whose sum is σ = 590206652928. Its totient is φ = 237821304000.

The previous prime is 399083838533. The next prime is 399083838551. The reversal of 399083838549 is 945838380993.

It is not a de Polignac number, because 399083838549 - 2⁴ = 399083838533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399083838509) 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, 6028222 + ... + 6094064.

It is an arithmetic number, because the mean of its divisors is an integer number (18443957904).

Almost surely, 2^399083838549 is an apocalyptic number.

It is an amenable number.

399083838549 is a deficient number, since it is larger than the sum of its proper divisors (191122814379).

399083838549 is a wasteful number, since it uses less digits than its factorization.

399083838549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68929.

The product of its (nonzero) digits is 201553920, while the sum is 69.

The spelling of 399083838549 in words is "three hundred ninety-nine billion, eighty-three million, eight hundred thirty-eight thousand, five hundred forty-nine".