149903 has 6 divisors (see below), whose sum is σ = 162504. Its totient is φ = 138216.

The previous prime is 149899. The next prime is 149909. The reversal of 149903 is 309941.

It is a happy number.

149903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149903 - 2² = 149899 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275 + ... + 612.

It is an arithmetic number, because the mean of its divisors is an integer number (27084).

2¹⁴⁹⁹⁰³ is an apocalyptic number.

149903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

149903 is a deficient number, since it is larger than the sum of its proper divisors (12601).

149903 is an equidigital number, since it uses as much as digits as its factorization.

149903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 149903 is about 387.1730879077. The cubic root of 149903 is about 53.1214728916.

The spelling of 149903 in words is "one hundred forty-nine thousand, nine hundred three".