150221979 has 32 divisors (see below), whose sum is σ = 236658240. Its totient is φ = 93851136.

The previous prime is 150221977. The next prime is 150221983. The reversal of 150221979 is 979122051.

150221979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 150221979 - 2¹ = 150221977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (150221971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133929 + ... + 135045.

It is an arithmetic number, because the mean of its divisors is an integer number (7395570).

Almost surely, 2^150221979 is an apocalyptic number.

150221979 is a deficient number, since it is larger than the sum of its proper divisors (86436261).

150221979 is a wasteful number, since it uses less digits than its factorization.

150221979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 150221979 is about 12256.5076184042. The cubic root of 150221979 is about 531.5912530599.

The spelling of 150221979 in words is "one hundred fifty million, two hundred twenty-one thousand, nine hundred seventy-nine".