426188939 has 8 divisors (see below), whose sum is σ = 465653232. Its totient is φ = 386844640.

The previous prime is 426188909. The next prime is 426188957. The reversal of 426188939 is 939881624.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 426188939 - 2¹⁶ = 426123403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (426188909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22484 + ... + 36849.

It is an arithmetic number, because the mean of its divisors is an integer number (58206654).

Almost surely, 2^426188939 is an apocalyptic number.

426188939 is a deficient number, since it is larger than the sum of its proper divisors (39464293).

426188939 is a wasteful number, since it uses less digits than its factorization.

426188939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59997.

The product of its digits is 746496, while the sum is 50.

The square root of 426188939 is about 20644.3439953901. The cubic root of 426188939 is about 752.5477438315.

The spelling of 426188939 in words is "four hundred twenty-six million, one hundred eighty-eight thousand, nine hundred thirty-nine".