399266803101 has 4 divisors (see below), whose sum is σ = 532355737472. Its totient is φ = 266177868732.

The previous prime is 399266803079. The next prime is 399266803127. The reversal of 399266803101 is 101308662993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101308662993 = 3 ⋅33769554331.

It is not a de Polignac number, because 399266803101 - 2¹¹ = 399266801053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399266803501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66544467181 + ... + 66544467186.

It is an arithmetic number, because the mean of its divisors is an integer number (133088934368).

Almost surely, 2^399266803101 is an apocalyptic number.

It is an amenable number.

399266803101 is a deficient number, since it is larger than the sum of its proper divisors (133088934371).

399266803101 is a wasteful number, since it uses less digits than its factorization.

399266803101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133088934370.

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 399266803101 in words is "three hundred ninety-nine billion, two hundred sixty-six million, eight hundred three thousand, one hundred one".