30384989 has 2 divisors, whose sum is σ = 30384990. Its totient is φ = 30384988.

The previous prime is 30384943. The next prime is 30385007. The reversal of 30384989 is 98948303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18344089 + 12040900 = 4283^2 + 3470^2 .

It is a cyclic number.

It is not a de Polignac number, because 30384989 - 2¹⁶ = 30319453 is a prime.

It is a super-3 number, since 3×30384989³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30384919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15192494 + 15192495.

It is an arithmetic number, because the mean of its divisors is an integer number (15192495).

Almost surely, 2^30384989 is an apocalyptic number.

It is an amenable number.

30384989 is a deficient number, since it is larger than the sum of its proper divisors (1).

30384989 is an equidigital number, since it uses as much as digits as its factorization.

30384989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 30384989 is about 5512.2580672534. The cubic root of 30384989 is about 312.0467721081.

The spelling of 30384989 in words is "thirty million, three hundred eighty-four thousand, nine hundred eighty-nine".