149930903 has 4 divisors (see below), whose sum is σ = 150641688. Its totient is φ = 149220120.

The previous prime is 149930897. The next prime is 149930909. The reversal of 149930903 is 309039941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309039941 = 7 ⋅44148563.

It is an interprime number because it is at equal distance from previous prime (149930897) and next prime (149930909).

It is a cyclic number.

It is not a de Polignac number, because 149930903 - 2⁴ = 149930887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149930909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355076 + ... + 355497.

It is an arithmetic number, because the mean of its divisors is an integer number (37660422).

Almost surely, 2^149930903 is an apocalyptic number.

149930903 is a deficient number, since it is larger than the sum of its proper divisors (710785).

149930903 is an equidigital number, since it uses as much as digits as its factorization.

149930903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710784.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 149930903 is about 12244.6275157720. The cubic root of 149930903 is about 531.2476870395.

The spelling of 149930903 in words is "one hundred forty-nine million, nine hundred thirty thousand, nine hundred three".