30890969 has 4 divisors (see below), whose sum is σ = 31046400. Its totient is φ = 30735540.

The previous prime is 30890963. The next prime is 30891011. The reversal of 30890969 is 96909803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30890969 is a prime.

It is a super-3 number, since 3×30890969³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30890963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77417 + ... + 77814.

It is an arithmetic number, because the mean of its divisors is an integer number (7761600).

Almost surely, 2^30890969 is an apocalyptic number.

It is an amenable number.

30890969 is a deficient number, since it is larger than the sum of its proper divisors (155431).

30890969 is a wasteful number, since it uses less digits than its factorization.

30890969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155430.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 30890969 is about 5557.9644655215. The cubic root of 30890969 is about 313.7693445848.

The spelling of 30890969 in words is "thirty million, eight hundred ninety thousand, nine hundred sixty-nine".