150345989 has 4 divisors (see below), whose sum is σ = 151725420. Its totient is φ = 148966560.

The previous prime is 150345971. The next prime is 150346033. The reversal of 150345989 is 989543051.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78180964 + 72165025 = 8842^2 + 8495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150345989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150345929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689552 + ... + 689769.

It is an arithmetic number, because the mean of its divisors is an integer number (37931355).

Almost surely, 2^150345989 is an apocalyptic number.

It is an amenable number.

150345989 is a deficient number, since it is larger than the sum of its proper divisors (1379431).

150345989 is a wasteful number, since it uses less digits than its factorization.

150345989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379430.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 150345989 is about 12261.5655199489. The cubic root of 150345989 is about 531.7374910917.

The spelling of 150345989 in words is "one hundred fifty million, three hundred forty-five thousand, nine hundred eighty-nine".