149209903 has 2 divisors, whose sum is σ = 149209904. Its totient is φ = 149209902.

The previous prime is 149209877. The next prime is 149209909. The reversal of 149209903 is 309902941.

149209903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149209903 - 2¹³ = 149201711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149209909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74604951 + 74604952.

It is an arithmetic number, because the mean of its divisors is an integer number (74604952).

Almost surely, 2^149209903 is an apocalyptic number.

149209903 is a deficient number, since it is larger than the sum of its proper divisors (1).

149209903 is an equidigital number, since it uses as much as digits as its factorization.

149209903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 149209903 is about 12215.1505516715. The cubic root of 149209903 is about 530.3947492270.

The spelling of 149209903 in words is "one hundred forty-nine million, two hundred nine thousand, nine hundred three".