30689039 has 8 divisors (see below), whose sum is σ = 32200320. Its totient is φ = 29210400.

The previous prime is 30689023. The next prime is 30689053. The reversal of 30689039 is 93098603.

It is a happy number.

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 30689039 - 2⁴ = 30689023 is a prime.

It is a super-2 number, since 2×30689039² = 1883634229487042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30688993 and 30689011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30689339) 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 7 ways as a sum of consecutive naturals, for example, 6224 + ... + 10005.

It is an arithmetic number, because the mean of its divisors is an integer number (4025040).

Almost surely, 2^30689039 is an apocalyptic number.

30689039 is a deficient number, since it is larger than the sum of its proper divisors (1511281).

30689039 is a wasteful number, since it uses less digits than its factorization.

30689039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16321.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 30689039 is about 5539.7688579940. The cubic root of 30689039 is about 313.0841604606.

The spelling of 30689039 in words is "thirty million, six hundred eighty-nine thousand, thirty-nine".