30442889 has 2 divisors, whose sum is σ = 30442890. Its totient is φ = 30442888.

The previous prime is 30442877. The next prime is 30442901. The reversal of 30442889 is 98824403.

It is a balanced prime because it is at equal distance from previous prime (30442877) and next prime (30442901).

It can be written as a sum of positive squares in only one way, i.e., 25000000 + 5442889 = 5000^2 + 2333^2 .

It is a cyclic number.

It is not a de Polignac number, because 30442889 - 2⁴ = 30442873 is a prime.

It is not a weakly prime, because it can be changed into another prime (30442859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15221444 + 15221445.

It is an arithmetic number, because the mean of its divisors is an integer number (15221445).

Almost surely, 2^30442889 is an apocalyptic number.

It is an amenable number.

30442889 is a deficient number, since it is larger than the sum of its proper divisors (1).

30442889 is an equidigital number, since it uses as much as digits as its factorization.

30442889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 30442889 is about 5517.5074988621. The cubic root of 30442889 is about 312.2448528565.

The spelling of 30442889 in words is "thirty million, four hundred forty-two thousand, eight hundred eighty-nine".