30329947 has 4 divisors (see below), whose sum is σ = 31926280. Its totient is φ = 28733616.

The previous prime is 30329933. The next prime is 30329951. The reversal of 30329947 is 74992303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74992303 = 37 ⋅2026819.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30329947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30329927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798138 + ... + 798175.

It is an arithmetic number, because the mean of its divisors is an integer number (7981570).

Almost surely, 2^30329947 is an apocalyptic number.

30329947 is a deficient number, since it is larger than the sum of its proper divisors (1596333).

30329947 is a wasteful number, since it uses less digits than its factorization.

30329947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596332.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 30329947 is about 5507.2631133804. The cubic root of 30329947 is about 311.8582353710.

The spelling of 30329947 in words is "thirty million, three hundred twenty-nine thousand, nine hundred forty-seven".