30077989 has 2 divisors, whose sum is σ = 30077990. Its totient is φ = 30077988.

The previous prime is 30077963. The next prime is 30078031. The reversal of 30077989 is 98977003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21696964 + 8381025 = 4658^2 + 2895^2 .

It is an emirp because it is prime and its reverse (98977003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30077989 - 2¹³ = 30069797 is a prime.

It is a super-3 number, since 3×30077989³ (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 (30077389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15038994 + 15038995.

It is an arithmetic number, because the mean of its divisors is an integer number (15038995).

Almost surely, 2^30077989 is an apocalyptic number.

It is an amenable number.

30077989 is a deficient number, since it is larger than the sum of its proper divisors (1).

30077989 is an equidigital number, since it uses as much as digits as its factorization.

30077989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 30077989 is about 5484.3403431953. The cubic root of 30077989 is about 310.9922731165.

The spelling of 30077989 in words is "thirty million, seventy-seven thousand, nine hundred eighty-nine".