152389991 has 8 divisors (see below), whose sum is σ = 165063360. Its totient is φ = 139852512.

The previous prime is 152389987. The next prime is 152390011. The reversal of 152389991 is 199983251.

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 152389991 - 2² = 152389987 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 (152389901) 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 in 7 ways as a sum of consecutive naturals, for example, 31631 + ... + 36128.

It is an arithmetic number, because the mean of its divisors is an integer number (20632920).

Almost surely, 2^152389991 is an apocalyptic number.

152389991 is a deficient number, since it is larger than the sum of its proper divisors (12673369).

152389991 is a wasteful number, since it uses less digits than its factorization.

152389991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67945.

The product of its digits is 174960, while the sum is 47.

The square root of 152389991 is about 12344.6340974530. The cubic root of 152389991 is about 534.1363665350.

The spelling of 152389991 in words is "one hundred fifty-two million, three hundred eighty-nine thousand, nine hundred ninety-one".