389991420422 has 16 divisors (see below), whose sum is σ = 615227830272. Its totient is φ = 185048990280.

The previous prime is 389991420419. The next prime is 389991420433. The reversal of 389991420422 is 224024199983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33372404 + ... + 33384087.

It is an arithmetic number, because the mean of its divisors is an integer number (38451739392).

Almost surely, 2^389991420422 is an apocalyptic number.

389991420422 is a deficient number, since it is larger than the sum of its proper divisors (225236409850).

389991420422 is a wasteful number, since it uses less digits than its factorization.

389991420422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66756643.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 389991420422 in words is "three hundred eighty-nine billion, nine hundred ninety-one million, four hundred twenty thousand, four hundred twenty-two".