149873986 has 8 divisors (see below), whose sum is σ = 225244044. Its totient is φ = 74792640.

The previous prime is 149873947. The next prime is 149873987. The reversal of 149873986 is 689378941.

149873986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 149303961 + 570025 = 12219^2 + 755^2 .

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

It is not an unprimeable number, because it can be changed into a prime (149873987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70875 + ... + 72958.

Almost surely, 2^149873986 is an apocalyptic number.

149873986 is a deficient number, since it is larger than the sum of its proper divisors (75370058).

149873986 is a wasteful number, since it uses less digits than its factorization.

149873986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144356.

The product of its digits is 2612736, while the sum is 55.

The square root of 149873986 is about 12242.3031329893. The cubic root of 149873986 is about 531.1804541764.

The spelling of 149873986 in words is "one hundred forty-nine million, eight hundred seventy-three thousand, nine hundred eighty-six".