830139943 has 8 divisors (see below), whose sum is σ = 867148416. Its totient is φ = 793207800.

The previous prime is 830139931. The next prime is 830139949. The reversal of 830139943 is 349931038.

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 830139943 - 2²¹ = 828042791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 830139896 and 830139905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830139949) 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, 3748 + ... + 40918.

It is an arithmetic number, because the mean of its divisors is an integer number (108393552).

Almost surely, 2^830139943 is an apocalyptic number.

830139943 is a deficient number, since it is larger than the sum of its proper divisors (37008473).

830139943 is a wasteful number, since it uses less digits than its factorization.

830139943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38165.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 830139943 is about 28812.1492256305. The cubic root of 830139943 is about 939.8324520299.

The spelling of 830139943 in words is "eight hundred thirty million, one hundred thirty-nine thousand, nine hundred forty-three".