399246284084 has 6 divisors (see below), whose sum is σ = 698680997154. Its totient is φ = 199623142040.

The previous prime is 399246284069. The next prime is 399246284131. The reversal of 399246284084 is 480482642993.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 370488907684 + 28757376400 = 608678^2 + 169580^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49905785507 + ... + 49905785514.

It is an arithmetic number, because the mean of its divisors is an integer number (116446832859).

Almost surely, 2^399246284084 is an apocalyptic number.

It is an amenable number.

399246284084 is a deficient number, since it is larger than the sum of its proper divisors (299434713070).

399246284084 is a wasteful number, since it uses less digits than its factorization.

399246284084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99811571025 (or 99811571023 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 59.

The spelling of 399246284084 in words is "three hundred ninety-nine billion, two hundred forty-six million, two hundred eighty-four thousand, eighty-four".