149999505 has 16 divisors (see below), whose sum is σ = 240369984. Its totient is φ = 79876160.

The previous prime is 149999503. The next prime is 149999561. The reversal of 149999505 is 505999941.

It is a happy number.

149999505 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 149999505 - 2¹ = 149999503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149999501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2770 + ... + 17540.

It is an arithmetic number, because the mean of its divisors is an integer number (15023124).

Almost surely, 2^149999505 is an apocalyptic number.

149999505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149999505 is a deficient number, since it is larger than the sum of its proper divisors (90370479).

149999505 is a wasteful number, since it uses less digits than its factorization.

149999505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15456.

The product of its (nonzero) digits is 656100, while the sum is 51.

The square root of 149999505 is about 12247.4285056088. The cubic root of 149999505 is about 531.3287001284.

The spelling of 149999505 in words is "one hundred forty-nine million, nine hundred ninety-nine thousand, five hundred five".