150720389 has 2 divisors, whose sum is σ = 150720390. Its totient is φ = 150720388.

The previous prime is 150720379. The next prime is 150720391. The reversal of 150720389 is 983027051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146652100 + 4068289 = 12110^2 + 2017^2 .

It is an emirp because it is prime and its reverse (983027051) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150720389 is a prime.

It is a super-2 number, since 2×150720389² = 45433271320622642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 150720391, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150720379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75360194 + 75360195.

It is an arithmetic number, because the mean of its divisors is an integer number (75360195).

Almost surely, 2^150720389 is an apocalyptic number.

It is an amenable number.

150720389 is a deficient number, since it is larger than the sum of its proper divisors (1).

150720389 is an equidigital number, since it uses as much as digits as its factorization.

150720389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 150720389 is about 12276.8232454491. The cubic root of 150720389 is about 532.1785126997.

The spelling of 150720389 in words is "one hundred fifty million, seven hundred twenty thousand, three hundred eighty-nine".