149958989 has 8 divisors (see below), whose sum is σ = 159236280. Its totient is φ = 140732416.

The previous prime is 149958959. The next prime is 149959013. The reversal of 149958989 is 989859941.

It can be written as a sum of positive squares in 4 ways, for example, as 85285225 + 64673764 = 9235^2 + 8042^2 .

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 149958989 - 2²⁰ = 148910413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149958959) 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, 6494 + ... + 18495.

It is an arithmetic number, because the mean of its divisors is an integer number (19904535).

Almost surely, 2^149958989 is an apocalyptic number.

It is an amenable number.

149958989 is a deficient number, since it is larger than the sum of its proper divisors (9277291).

149958989 is a wasteful number, since it uses less digits than its factorization.

149958989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25359.

The product of its digits is 8398080, while the sum is 62.

The square root of 149958989 is about 12245.7743323973. The cubic root of 149958989 is about 531.2808571880.

The spelling of 149958989 in words is "one hundred forty-nine million, nine hundred fifty-eight thousand, nine hundred eighty-nine".