399199663933 has 12 divisors (see below), whose sum is σ = 464419261152. Its totient is φ = 342138615000.

The previous prime is 399199663897. The next prime is 399199663969. The reversal of 399199663933 is 339366991993.

It is an interprime number because it is at equal distance from previous prime (399199663897) and next prime (399199663969).

It is not a de Polignac number, because 399199663933 - 2¹³ = 399199655741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399199663033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140808 + ... + 904558.

It is an arithmetic number, because the mean of its divisors is an integer number (38701605096).

Almost surely, 2^399199663933 is an apocalyptic number.

It is an amenable number.

399199663933 is a deficient number, since it is larger than the sum of its proper divisors (65219597219).

399199663933 is a wasteful number, since it uses less digits than its factorization.

399199663933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774432 (or 774425 counting only the distinct ones).

The product of its digits is 172186884, while the sum is 70.

The spelling of 399199663933 in words is "three hundred ninety-nine billion, one hundred ninety-nine million, six hundred sixty-three thousand, nine hundred thirty-three".