149493213 has 6 divisors (see below), whose sum is σ = 215934654. Its totient is φ = 99662136.

The previous prime is 149493193. The next prime is 149493221. The reversal of 149493213 is 312394941.

149493213 is a `hidden beast` number, since 149 + 493 + 21 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 143352729 + 6140484 = 11973^2 + 2478^2 .

It is not a de Polignac number, because 149493213 - 2⁸ = 149492957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149493263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8305170 + ... + 8305187.

It is an arithmetic number, because the mean of its divisors is an integer number (35989109).

Almost surely, 2^149493213 is an apocalyptic number.

It is an amenable number.

149493213 is a deficient number, since it is larger than the sum of its proper divisors (66441441).

149493213 is a wasteful number, since it uses less digits than its factorization.

149493213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16610363 (or 16610360 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 149493213 is about 12226.7417164182. The cubic root of 149493213 is about 530.7302299345.

The spelling of 149493213 in words is "one hundred forty-nine million, four hundred ninety-three thousand, two hundred thirteen".