8420925838 has 8 divisors (see below), whose sum is σ = 13603034088. Its totient is φ = 3886581144.

The previous prime is 8420925823. The next prime is 8420925889. The reversal of 8420925838 is 8385290248.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 8420925791 and 8420925800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161940856 + ... + 161940907.

It is an arithmetic number, because the mean of its divisors is an integer number (1700379261).

Almost surely, 2^8420925838 is an apocalyptic number.

8420925838 is a deficient number, since it is larger than the sum of its proper divisors (5182108250).

8420925838 is a wasteful number, since it uses less digits than its factorization.

8420925838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323881778.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 8420925838 is about 91765.6026951275. The cubic root of 8420925838 is about 2034.4793254060.

The spelling of 8420925838 in words is "eight billion, four hundred twenty million, nine hundred twenty-five thousand, eight hundred thirty-eight".