305959949 has 2 divisors, whose sum is σ = 305959950. Its totient is φ = 305959948.

The previous prime is 305959943. The next prime is 305959981. The reversal of 305959949 is 949959503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153313924 + 152646025 = 12382^2 + 12355^2 .

It is a cyclic number.

It is not a de Polignac number, because 305959949 - 2²⁸ = 37524493 is a prime.

It is a super-2 number, since 2×305959949² = 187222980784165202, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 305959949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305959943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152979974 + 152979975.

It is an arithmetic number, because the mean of its divisors is an integer number (152979975).

Almost surely, 2^305959949 is an apocalyptic number.

It is an amenable number.

305959949 is a deficient number, since it is larger than the sum of its proper divisors (1).

305959949 is an equidigital number, since it uses as much as digits as its factorization.

305959949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1968300, while the sum is 53.

The square root of 305959949 is about 17491.7108654357. The cubic root of 305959949 is about 673.8370089899.

The spelling of 305959949 in words is "three hundred five million, nine hundred fifty-nine thousand, nine hundred forty-nine".