30923929 has 4 divisors (see below), whose sum is σ = 30937140. Its totient is φ = 30910720.

The previous prime is 30923911. The next prime is 30923933. The reversal of 30923929 is 92932903.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29680704 + 1243225 = 5448^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 30923929 - 2⁷ = 30923801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30923909) 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, 2044 + ... + 8125.

It is an arithmetic number, because the mean of its divisors is an integer number (7734285).

Almost surely, 2^30923929 is an apocalyptic number.

It is an amenable number.

30923929 is a deficient number, since it is larger than the sum of its proper divisors (13211).

30923929 is a wasteful number, since it uses less digits than its factorization.

30923929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13210.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 30923929 is about 5560.9287893301. The cubic root of 30923929 is about 313.8808999675.

It can be divided in two parts, 3092 and 3929, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 30923929 in words is "thirty million, nine hundred twenty-three thousand, nine hundred twenty-nine".