149278885 has 16 divisors (see below), whose sum is σ = 205186176. Its totient is φ = 102132288.

The previous prime is 149278867. The next prime is 149278891. The reversal of 149278885 is 588872941.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 149278885 - 2¹¹ = 149276837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11779 + ... + 20911.

It is an arithmetic number, because the mean of its divisors is an integer number (12824136).

Almost surely, 2^149278885 is an apocalyptic number.

It is an amenable number.

149278885 is a deficient number, since it is larger than the sum of its proper divisors (55907291).

149278885 is an equidigital number, since it uses as much as digits as its factorization.

149278885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9612.

The product of its digits is 1290240, while the sum is 52.

The square root of 149278885 is about 12217.9738500293. The cubic root of 149278885 is about 530.4764731452.

The spelling of 149278885 in words is "one hundred forty-nine million, two hundred seventy-eight thousand, eight hundred eighty-five".