149078905 has 8 divisors (see below), whose sum is σ = 178968384. Its totient is φ = 119214000.

The previous prime is 149078903. The next prime is 149078947. The reversal of 149078905 is 509870941.

149078905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149078905 - 2¹ = 149078903 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149078903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12180 + ... + 21130.

It is an arithmetic number, because the mean of its divisors is an integer number (22371048).

Almost surely, 2^149078905 is an apocalyptic number.

It is an amenable number.

149078905 is a deficient number, since it is larger than the sum of its proper divisors (29889479).

149078905 is an equidigital number, since it uses as much as digits as its factorization.

149078905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12287.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 149078905 is about 12209.7872626840. The cubic root of 149078905 is about 530.2394847456.

The spelling of 149078905 in words is "one hundred forty-nine million, seventy-eight thousand, nine hundred five".