149949 has 6 divisors (see below), whose sum is σ = 216606. Its totient is φ = 99960.

The previous prime is 149939. The next prime is 149953. The reversal of 149949 is 949941.

149949 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in only one way, i.e., 127449 + 22500 = 357^2 + 150^2 .

It is a de Polignac number, because none of the positive numbers 2^k-149949 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149909) 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, 8322 + ... + 8339.

It is an arithmetic number, because the mean of its divisors is an integer number (36101).

2¹⁴⁹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

149949 is a deficient number, since it is larger than the sum of its proper divisors (66657).

149949 is a wasteful number, since it uses less digits than its factorization.

149949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16667 (or 16664 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 149949 is about 387.2324883064. The cubic root of 149949 is about 53.1269060446.

The spelling of 149949 in words is "one hundred forty-nine thousand, nine hundred forty-nine".