149686369 has 12 divisors (see below), whose sum is σ = 178835776. Its totient is φ = 122721192.

The previous prime is 149686333. The next prime is 149686373. The reversal of 149686369 is 963686941.

It is not a de Polignac number, because 149686369 - 2¹¹ = 149684321 is a prime.

It is a super-2 number, since 2×149686369² = 44812018128808322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149686319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16509 + ... + 23914.

Almost surely, 2^149686369 is an apocalyptic number.

It is an amenable number.

149686369 is a deficient number, since it is larger than the sum of its proper divisors (29149407).

149686369 is an equidigital number, since it uses as much as digits as its factorization.

149686369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40476 (or 40453 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 52.

The square root of 149686369 is about 12234.6380821012. The cubic root of 149686369 is about 530.9587121204.

The spelling of 149686369 in words is "one hundred forty-nine million, six hundred eighty-six thousand, three hundred sixty-nine".