399703466444799 has 16 divisors (see below), whose sum is σ = 595567027609344. Its totient is φ = 236336122065600.

The previous prime is 399703466444747. The next prime is 399703466444957. The reversal of 399703466444799 is 997444664307993.

It is not a de Polignac number, because 399703466444799 - 2⁹ = 399703466444287 is a prime.

It is a super-2 number, since 2×399703466444799² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399703466444599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147710074939 + ... + 147710077644.

It is an arithmetic number, because the mean of its divisors is an integer number (37222939225584).

Almost surely, 2^{399703466444799} is an apocalyptic number.

399703466444799 is a deficient number, since it is larger than the sum of its proper divisors (195863561164545).

399703466444799 is a wasteful number, since it uses less digits than its factorization.

399703466444799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295420152638.

The product of its (nonzero) digits is 26665583616, while the sum is 84.

The spelling of 399703466444799 in words is "three hundred ninety-nine trillion, seven hundred three billion, four hundred sixty-six million, four hundred forty-four thousand, seven hundred ninety-nine".