30829139 has 8 divisors (see below), whose sum is σ = 33966000. Its totient is φ = 27748000.

The previous prime is 30829129. The next prime is 30829157. The reversal of 30829139 is 93192803.

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 30829139 - 2⁸ = 30828883 is a prime.

It is a super-2 number, since 2×30829139² = 1900871622962642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30829099 and 30829108.

It is not an unprimeable number, because it can be changed into a prime (30829129) 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, 12764 + ... + 14985.

It is an arithmetic number, because the mean of its divisors is an integer number (4245750).

Almost surely, 2^30829139 is an apocalyptic number.

30829139 is a deficient number, since it is larger than the sum of its proper divisors (3136861).

30829139 is a wasteful number, since it uses less digits than its factorization.

30829139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27861.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 30829139 is about 5552.3993912542. The cubic root of 30829139 is about 313.5598624692.

It can be divided in two parts, 3082 and 9139, that added together give a palindrome (12221).

The spelling of 30829139 in words is "thirty million, eight hundred twenty-nine thousand, one hundred thirty-nine".