399246903412 has 72 divisors (see below), whose sum is σ = 831149877600. Its totient is φ = 167265153216.

The previous prime is 399246903403. The next prime is 399246903421. The reversal of 399246903412 is 214309642993.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (399246903403) and next prime (399246903421).

It is a self number, because there is not a number n which added to its sum of digits gives 399246903412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1973518 + ... + 2166394.

It is an arithmetic number, because the mean of its divisors is an integer number (11543748300).

Almost surely, 2^399246903412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399246903412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415574938800).

399246903412 is an abundant number, since it is smaller than the sum of its proper divisors (431902974188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399246903412 is a wasteful number, since it uses less digits than its factorization.

399246903412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193133 (or 193124 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 52.

The spelling of 399246903412 in words is "three hundred ninety-nine billion, two hundred forty-six million, nine hundred three thousand, four hundred twelve".