30940929 has 6 divisors (see below), whose sum is σ = 44692466. Its totient is φ = 20627280.

The previous prime is 30940919. The next prime is 30940933. The reversal of 30940929 is 92904903.

It can be written as a sum of positive squares in only one way, i.e., 30636225 + 304704 = 5535^2 + 552^2 .

It is not a de Polignac number, because 30940929 - 2⁴ = 30940913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30940893 and 30940902.

It is not an unprimeable number, because it can be changed into a prime (30940919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1718932 + ... + 1718949.

Almost surely, 2^30940929 is an apocalyptic number.

It is an amenable number.

30940929 is a deficient number, since it is larger than the sum of its proper divisors (13751537).

30940929 is a wasteful number, since it uses less digits than its factorization.

30940929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437887 (or 3437884 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 30940929 is about 5562.4571009582. The cubic root of 30940929 is about 313.9384066511.

The spelling of 30940929 in words is "thirty million, nine hundred forty thousand, nine hundred twenty-nine".