149686117 has 8 divisors (see below), whose sum is σ = 174710016. Its totient is φ = 125572272.

The previous prime is 149686099. The next prime is 149686153. The reversal of 149686117 is 711686941.

149686117 = 109² + 110² + ... + 766².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149686117 - 2¹⁹ = 149161829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149686217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227158 + ... + 227815.

It is an arithmetic number, because the mean of its divisors is an integer number (21838752).

Almost surely, 2^149686117 is an apocalyptic number.

It is an amenable number.

149686117 is a deficient number, since it is larger than the sum of its proper divisors (25023899).

149686117 is an equidigital number, since it uses as much as digits as its factorization.

149686117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455027.

The product of its digits is 72576, while the sum is 43.

The square root of 149686117 is about 12234.6277834677. The cubic root of 149686117 is about 530.9584141603.

The spelling of 149686117 in words is "one hundred forty-nine million, six hundred eighty-six thousand, one hundred seventeen".