30406489 has 8 divisors (see below), whose sum is σ = 33065928. Its totient is φ = 27843840.

The previous prime is 30406463. The next prime is 30406507. The reversal of 30406489 is 98460403.

It can be written as a sum of positive squares in 4 ways, for example, as 20115225 + 10291264 = 4485^2 + 3208^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30406489 - 2¹³ = 30398297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30406429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23542 + ... + 24799.

It is an arithmetic number, because the mean of its divisors is an integer number (4133241).

Almost surely, 2^30406489 is an apocalyptic number.

It is an amenable number.

30406489 is a deficient number, since it is larger than the sum of its proper divisors (2659439).

30406489 is a wasteful number, since it uses less digits than its factorization.

30406489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48395.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 30406489 is about 5514.2079213610. The cubic root of 30406489 is about 312.1203547558.

The spelling of 30406489 in words is "thirty million, four hundred six thousand, four hundred eighty-nine".