399089995629389 has 4 divisors (see below), whose sum is σ = 399208807777920. Its totient is φ = 398971183480860.

The previous prime is 399089995629373. The next prime is 399089995629421. The reversal of 399089995629389 is 983926599980993.

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 399089995629389 - 2⁴ = 399089995629373 is a prime.

It is a super-2 number, since 2×399089995629389² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399089995629295 and 399089995629304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399089995622389) 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, 59406069227 + ... + 59406075944.

It is an arithmetic number, because the mean of its divisors is an integer number (99802201944480).

Almost surely, 2^{399089995629389} is an apocalyptic number.

It is an amenable number.

399089995629389 is a deficient number, since it is larger than the sum of its proper divisors (118812148531).

399089995629389 is a wasteful number, since it uses less digits than its factorization.

399089995629389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118812148530.

The product of its (nonzero) digits is 165299408640, while the sum is 98.

The spelling of 399089995629389 in words is "three hundred ninety-nine trillion, eighty-nine billion, nine hundred ninety-five million, six hundred twenty-nine thousand, three hundred eighty-nine".