149389433 has 2 divisors, whose sum is σ = 149389434. Its totient is φ = 149389432.

The previous prime is 149389423. The next prime is 149389447. The reversal of 149389433 is 334983941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115842169 + 33547264 = 10763^2 + 5792^2 .

It is an emirp because it is prime and its reverse (334983941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149389433 - 2¹⁰ = 149388409 is a prime.

It is a super-2 number, since 2×149389433² = 44634405384122978, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (149389423) 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, 74694716 + 74694717.

It is an arithmetic number, because the mean of its divisors is an integer number (74694717).

Almost surely, 2^149389433 is an apocalyptic number.

It is an amenable number.

149389433 is a deficient number, since it is larger than the sum of its proper divisors (1).

149389433 is an equidigital number, since it uses as much as digits as its factorization.

149389433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 44.

The square root of 149389433 is about 12222.4970034768. The cubic root of 149389433 is about 530.6073883851.

The spelling of 149389433 in words is "one hundred forty-nine million, three hundred eighty-nine thousand, four hundred thirty-three".