30980739 has 4 divisors (see below), whose sum is σ = 41307656. Its totient is φ = 20653824.

The previous prime is 30980693. The next prime is 30980759. The reversal of 30980739 is 93708903.

It is a happy number.

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

It is not a de Polignac number, because 30980739 - 2⁸ = 30980483 is a prime.

It is a super-2 number, since 2×30980739² = 1919612377972242, 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 = 30980697 and 30980706.

It is not an unprimeable number, because it can be changed into a prime (30980759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5163454 + ... + 5163459.

It is an arithmetic number, because the mean of its divisors is an integer number (10326914).

Almost surely, 2^30980739 is an apocalyptic number.

30980739 is a deficient number, since it is larger than the sum of its proper divisors (10326917).

30980739 is a wasteful number, since it uses less digits than its factorization.

30980739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10326916.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 30980739 is about 5566.0344052117. The cubic root of 30980739 is about 314.0729914022.

The spelling of 30980739 in words is "thirty million, nine hundred eighty thousand, seven hundred thirty-nine".