149978859 has 8 divisors (see below), whose sum is σ = 201169920. Its totient is φ = 99386856.

The previous prime is 149978849. The next prime is 149978863. The reversal of 149978859 is 958879941.

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

It is not a de Polignac number, because 149978859 - 2⁹ = 149978347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149978849) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 149179 + ... + 150180.

It is an arithmetic number, because the mean of its divisors is an integer number (25146240).

Almost surely, 2^149978859 is an apocalyptic number.

149978859 is a deficient number, since it is larger than the sum of its proper divisors (51191061).

149978859 is a wasteful number, since it uses less digits than its factorization.

149978859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299529.

The product of its digits is 6531840, while the sum is 60.

The square root of 149978859 is about 12246.5856057923. The cubic root of 149978859 is about 531.3043215687.

The spelling of 149978859 in words is "one hundred forty-nine million, nine hundred seventy-eight thousand, eight hundred fifty-nine".