150879991 has 8 divisors (see below), whose sum is σ = 155320704. Its totient is φ = 146481720.

The previous prime is 150879943. The next prime is 150879997. The reversal of 150879991 is 199978051.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 150879991 - 2¹⁷ = 150748919 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 (150879997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3325 + ... + 17686.

It is an arithmetic number, because the mean of its divisors is an integer number (19415088).

Almost surely, 2^150879991 is an apocalyptic number.

150879991 is a deficient number, since it is larger than the sum of its proper divisors (4440713).

150879991 is a wasteful number, since it uses less digits than its factorization.

150879991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221.

The product of its (nonzero) digits is 204120, while the sum is 49.

The square root of 150879991 is about 12283.3216598769. The cubic root of 150879991 is about 532.3662926290.

The spelling of 150879991 in words is "one hundred fifty million, eight hundred seventy-nine thousand, nine hundred ninety-one".