838325639 has 4 divisors (see below), whose sum is σ = 840537960. Its totient is φ = 836113320.

The previous prime is 838325629. The next prime is 838325651. The reversal of 838325639 is 936523838.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936523838 = 2 ⋅468261919.

It is a cyclic number.

It is not a de Polignac number, because 838325639 - 2²⁴ = 821548423 is a prime.

It is a super-4 number, since 4×838325639⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 838325593 and 838325602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838325629) by changing a digit.

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, 1105592 + ... + 1106349.

It is an arithmetic number, because the mean of its divisors is an integer number (210134490).

Almost surely, 2^838325639 is an apocalyptic number.

838325639 is a deficient number, since it is larger than the sum of its proper divisors (2212321).

838325639 is a wasteful number, since it uses less digits than its factorization.

838325639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212320.

The product of its digits is 933120, while the sum is 47.

The square root of 838325639 is about 28953.8536122569. The cubic root of 838325639 is about 942.9114645525.

The spelling of 838325639 in words is "eight hundred thirty-eight million, three hundred twenty-five thousand, six hundred thirty-nine".