30829919 has 4 divisors (see below), whose sum is σ = 31352520. Its totient is φ = 30307320.

The previous prime is 30829907. The next prime is 30829927. The reversal of 30829919 is 91992803.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30829919 is a prime.

It is a super-2 number, since 2×30829919² = 1900967811093122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30829969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261212 + ... + 261329.

It is an arithmetic number, because the mean of its divisors is an integer number (7838130).

Almost surely, 2^30829919 is an apocalyptic number.

30829919 is a deficient number, since it is larger than the sum of its proper divisors (522601).

30829919 is an equidigital number, since it uses as much as digits as its factorization.

30829919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522600.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 30829919 is about 5552.4696307139. The cubic root of 30829919 is about 313.5625068790.

The spelling of 30829919 in words is "thirty million, eight hundred twenty-nine thousand, nine hundred nineteen".