30390469 has 4 divisors (see below), whose sum is σ = 30405580. Its totient is φ = 30375360.

The previous prime is 30390467. The next prime is 30390491. The reversal of 30390469 is 96409303.

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 17322244 + 13068225 = 4162^2 + 3615^2 .

It is a cyclic number.

It is not a de Polignac number, because 30390469 - 2¹ = 30390467 is a prime.

It is a super-3 number, since 3×30390469³ (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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30390467) 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, 3972 + ... + 8749.

It is an arithmetic number, because the mean of its divisors is an integer number (7601395).

Almost surely, 2^30390469 is an apocalyptic number.

It is an amenable number.

30390469 is a deficient number, since it is larger than the sum of its proper divisors (15111).

30390469 is a wasteful number, since it uses less digits than its factorization.

30390469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15110.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 30390469 is about 5512.7551188131. The cubic root of 30390469 is about 312.0655304224.

The spelling of 30390469 in words is "thirty million, three hundred ninety thousand, four hundred sixty-nine".