149503443 has 4 divisors (see below), whose sum is σ = 199337928. Its totient is φ = 99668960.

The previous prime is 149503441. The next prime is 149503447. The reversal of 149503443 is 344305941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149503443 - 2¹ = 149503441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149503441) 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, 24917238 + ... + 24917243.

It is an arithmetic number, because the mean of its divisors is an integer number (49834482).

Almost surely, 2^149503443 is an apocalyptic number.

149503443 is a deficient number, since it is larger than the sum of its proper divisors (49834485).

149503443 is an equidigital number, since it uses as much as digits as its factorization.

149503443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49834484.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 149503443 is about 12227.1600545670. The cubic root of 149503443 is about 530.7423358272.

The spelling of 149503443 in words is "one hundred forty-nine million, five hundred three thousand, four hundred forty-three".