128962349 has 2 divisors, whose sum is σ = 128962350. Its totient is φ = 128962348.

The previous prime is 128962297. The next prime is 128962363. The reversal of 128962349 is 943269821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104142025 + 24820324 = 10205^2 + 4982^2 .

It is a cyclic number.

It is not a de Polignac number, because 128962349 - 2¹² = 128958253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128962399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64481174 + 64481175.

It is an arithmetic number, because the mean of its divisors is an integer number (64481175).

Almost surely, 2^128962349 is an apocalyptic number.

It is an amenable number.

128962349 is a deficient number, since it is larger than the sum of its proper divisors (1).

128962349 is an equidigital number, since it uses as much as digits as its factorization.

128962349 is an odious number, because the sum of its binary digits is odd.

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

The square root of 128962349 is about 11356.1590777868. The cubic root of 128962349 is about 505.2282717962.

The spelling of 128962349 in words is "one hundred twenty-eight million, nine hundred sixty-two thousand, three hundred forty-nine".