149890986 has 80 divisors (see below), whose sum is σ = 387161280. Its totient is φ = 42456960.

The previous prime is 149890927. The next prime is 149890999. The reversal of 149890986 is 689098941.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 148050 + ... + 149058.

It is an arithmetic number, because the mean of its divisors is an integer number (4839516).

Almost surely, 2^149890986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149890986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193580640).

149890986 is an abundant number, since it is smaller than the sum of its proper divisors (237270294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149890986 is a wasteful number, since it uses less digits than its factorization.

149890986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 149890986 is about 12242.9974271009. The cubic root of 149890986 is about 531.2005371065.

The spelling of 149890986 in words is "one hundred forty-nine million, eight hundred ninety thousand, nine hundred eighty-six".