149834217 has 24 divisors (see below), whose sum is σ = 220039200. Its totient is φ = 90624768.

The previous prime is 149834197. The next prime is 149834221. The reversal of 149834217 is 712438941.

It is not a de Polignac number, because 149834217 - 2¹⁰ = 149833193 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (149834017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27409 + ... + 32417.

It is an arithmetic number, because the mean of its divisors is an integer number (9168300).

Almost surely, 2^149834217 is an apocalyptic number.

It is an amenable number.

149834217 is a deficient number, since it is larger than the sum of its proper divisors (70204983).

149834217 is a wasteful number, since it uses less digits than its factorization.

149834217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5097 (or 5084 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 149834217 is about 12240.6787801984. The cubic root of 149834217 is about 531.1334671825.

It can be divided in two parts, 149834 and 217, that added together give a palindrome (150051).

The spelling of 149834217 in words is "one hundred forty-nine million, eight hundred thirty-four thousand, two hundred seventeen".