428106691239 has 8 divisors (see below), whose sum is σ = 578034351360. Its totient is φ = 281791745976.

The previous prime is 428106691237. The next prime is 428106691249. The reversal of 428106691239 is 932196601824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428106691239 - 2¹ = 428106691237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428106691191 and 428106691200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428106691237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903178437 + ... + 903178910.

It is an arithmetic number, because the mean of its divisors is an integer number (72254293920).

Almost surely, 2^428106691239 is an apocalyptic number.

428106691239 is a deficient number, since it is larger than the sum of its proper divisors (149927660121).

428106691239 is a wasteful number, since it uses less digits than its factorization.

428106691239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806357429.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 428106691239 in words is "four hundred twenty-eight billion, one hundred six million, six hundred ninety-one thousand, two hundred thirty-nine".