148669249 has 9 divisors (see below), whose sum is σ = 151463977. Its totient is φ = 145925824.

The previous prime is 148669247. The next prime is 148669253. The reversal of 148669249 is 942966841.

The square root of 148669249 is 12193.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8673025 + 139996224 = 2945^2 + 11832^2 .

It is not a de Polignac number, because 148669249 - 2¹ = 148669247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148669247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1085109 + ... + 1085245.

Almost surely, 2^148669249 is an apocalyptic number.

148669249 is the 12193-rd square number.

148669249 is the 6097-th centered octagonal number.

It is an amenable number.

148669249 is a deficient number, since it is larger than the sum of its proper divisors (2794728).

148669249 is an frugal number, since it uses more digits than its factorization.

148669249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 226 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The cubic root of 148669249 is about 529.7533550366.

Multiplying 148669249 by its sum of digits (49), we get a square (7284793201 = 85351²).

Multiplying 148669249 by its product of digits (746496), we get a square (110980999701504 = 10534752²).

The spelling of 148669249 in words is "one hundred forty-eight million, six hundred sixty-nine thousand, two hundred forty-nine".