149940878 has 4 divisors (see below), whose sum is σ = 224911320. Its totient is φ = 74970438.

The previous prime is 149940851. The next prime is 149940907. The reversal of 149940878 is 878049941.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37485218 + ... + 37485221.

It is an arithmetic number, because the mean of its divisors is an integer number (56227830).

Almost surely, 2^149940878 is an apocalyptic number.

149940878 is a deficient number, since it is larger than the sum of its proper divisors (74970442).

149940878 is an equidigital number, since it uses as much as digits as its factorization.

149940878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74970441.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 149940878 is about 12245.0348304935. The cubic root of 149940878 is about 531.2594681957.

The spelling of 149940878 in words is "one hundred forty-nine million, nine hundred forty thousand, eight hundred seventy-eight".