149506405 has 4 divisors (see below), whose sum is σ = 179407692. Its totient is φ = 119605120.

The previous prime is 149506403. The next prime is 149506429. The reversal of 149506405 is 504605941.

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

It can be written as a sum of positive squares in 2 ways, for example, as 51753636 + 97752769 = 7194^2 + 9887^2 .

It is not a de Polignac number, because 149506405 - 2¹ = 149506403 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 (149506403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14950636 + ... + 14950645.

It is an arithmetic number, because the mean of its divisors is an integer number (44851923).

Almost surely, 2^149506405 is an apocalyptic number.

It is an amenable number.

149506405 is a deficient number, since it is larger than the sum of its proper divisors (29901287).

149506405 is an equidigital number, since it uses as much as digits as its factorization.

149506405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29901286.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 149506405 is about 12227.2811777598. The cubic root of 149506405 is about 530.7458408712.

The spelling of 149506405 in words is "one hundred forty-nine million, five hundred six thousand, four hundred five".