149850989 has 4 divisors (see below), whose sum is σ = 149916924. Its totient is φ = 149785056.

The previous prime is 149850979. The next prime is 149851007. The reversal of 149850989 is 989058941.

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 93450889 + 56400100 = 9667^2 + 7510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149850989 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149850989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149850919) 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, 29432 + ... + 34145.

It is an arithmetic number, because the mean of its divisors is an integer number (37479231).

Almost surely, 2^149850989 is an apocalyptic number.

It is an amenable number.

149850989 is a deficient number, since it is larger than the sum of its proper divisors (65935).

149850989 is an equidigital number, since it uses as much as digits as its factorization.

149850989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65934.

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 149850989 is about 12241.3638537542. The cubic root of 149850989 is about 531.1532842806.

The spelling of 149850989 in words is "one hundred forty-nine million, eight hundred fifty thousand, nine hundred eighty-nine".