149801489 has 4 divisors (see below), whose sum is σ = 150126900. Its totient is φ = 149476080.

The previous prime is 149801447. The next prime is 149801497. The reversal of 149801489 is 984108941.

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 115777600 + 34023889 = 10760^2 + 5833^2 .

It is a cyclic number.

It is not a de Polignac number, because 149801489 - 2⁸ = 149801233 is a prime.

It is a super-2 number, since 2×149801489² = 44880972213234242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149801089) 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 3 ways as a sum of consecutive naturals, for example, 162014 + ... + 162935.

It is an arithmetic number, because the mean of its divisors is an integer number (37531725).

Almost surely, 2^149801489 is an apocalyptic number.

It is an amenable number.

149801489 is a deficient number, since it is larger than the sum of its proper divisors (325411).

149801489 is an equidigital number, since it uses as much as digits as its factorization.

149801489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325410.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 149801489 is about 12239.3418532207. The cubic root of 149801489 is about 531.0947928791.

The spelling of 149801489 in words is "one hundred forty-nine million, eight hundred one thousand, four hundred eighty-nine".