102839381 has 8 divisors (see below), whose sum is σ = 108345600. Its totient is φ = 97342560.

The previous prime is 102839329. The next prime is 102839413. The reversal of 102839381 is 183938201.

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 102839381 - 2²² = 98645077 is a prime.

It is a super-2 number, since 2×102839381² = 21151876568926322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102239381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38396 + ... + 40986.

It is an arithmetic number, because the mean of its divisors is an integer number (13543200).

Almost surely, 2^102839381 is an apocalyptic number.

It is an amenable number.

102839381 is a deficient number, since it is larger than the sum of its proper divisors (5506219).

102839381 is a wasteful number, since it uses less digits than its factorization.

102839381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 102839381 is about 10140.9753475689. The cubic root of 102839381 is about 468.5110280341.

The spelling of 102839381 in words is "one hundred two million, eight hundred thirty-nine thousand, three hundred eighty-one".