399704028345 has 48 divisors (see below), whose sum is σ = 723031650432. Its totient is φ = 203881962240.

The previous prime is 399704028319. The next prime is 399704028371. The reversal of 399704028345 is 543820407993.

399704028345 is a `hidden beast` number, since 3 + 99 + 70 + 402 + 83 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (399704028319) and next prime (399704028371).

It is not a de Polignac number, because 399704028345 - 2⁸ = 399704028089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399704028291 and 399704028300.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10804530 + ... + 10841460.

It is an arithmetic number, because the mean of its divisors is an integer number (15063159384).

Almost surely, 2^399704028345 is an apocalyptic number.

It is an amenable number.

399704028345 is a deficient number, since it is larger than the sum of its proper divisors (323327622087).

399704028345 is a wasteful number, since it uses less digits than its factorization.

399704028345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47422 (or 47419 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 399704028345 in words is "three hundred ninety-nine billion, seven hundred four million, twenty-eight thousand, three hundred forty-five".