399010111011001 has 4 divisors (see below), whose sum is σ = 456011555441152. Its totient is φ = 342008666580852.

The previous prime is 399010111010971. The next prime is 399010111011023. The reversal of 399010111011001 is 100110111010993.

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.

It is a cyclic number.

It is not a de Polignac number, because 399010111011001 - 2⁴⁷ = 258272622655673 is a prime.

It is a super-2 number, since 2×399010111011001² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399010111011041) 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, 28500722215065 + ... + 28500722215078.

It is an arithmetic number, because the mean of its divisors is an integer number (114002888860288).

Almost surely, 2^{399010111011001} is an apocalyptic number.

It is an amenable number.

399010111011001 is a deficient number, since it is larger than the sum of its proper divisors (57001444430151).

399010111011001 is an equidigital number, since it uses as much as digits as its factorization.

399010111011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57001444430150.

The product of its (nonzero) digits is 243, while the sum is 28.

Adding to 399010111011001 its reverse (100110111010993), we get a palindrome (499120222021994).

The spelling of 399010111011001 in words is "three hundred ninety-nine trillion, ten billion, one hundred eleven million, eleven thousand, one".