30015949 has 2 divisors, whose sum is σ = 30015950. Its totient is φ = 30015948.

The previous prime is 30015919. The next prime is 30016001. The reversal of 30015949 is 94951003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26193924 + 3822025 = 5118^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 30015949 - 2²³ = 21627341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30015949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30015919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15007974 + 15007975.

It is an arithmetic number, because the mean of its divisors is an integer number (15007975).

Almost surely, 2^30015949 is an apocalyptic number.

It is an amenable number.

30015949 is a deficient number, since it is larger than the sum of its proper divisors (1).

30015949 is an equidigital number, since it uses as much as digits as its factorization.

30015949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 30015949 is about 5478.6813194418. The cubic root of 30015949 is about 310.7783044529.

The spelling of 30015949 in words is "thirty million, fifteen thousand, nine hundred forty-nine".