149169 has 8 divisors (see below), whose sum is σ = 209440. Its totient is φ = 94176.

The previous prime is 149161. The next prime is 149173. The reversal of 149169 is 961941.

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

It is not a de Polignac number, because 149169 - 2³ = 149161 is a prime.

It is a super-2 number, since 2×149169² = 44502781122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149161) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252 + ... + 1365.

It is an arithmetic number, because the mean of its divisors is an integer number (26180).

2¹⁴⁹¹⁶⁹ is an apocalyptic number.

149169 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

149169 is a deficient number, since it is larger than the sum of its proper divisors (60271).

149169 is a wasteful number, since it uses less digits than its factorization.

149169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639.

The product of its digits is 1944, while the sum is 30.

The square root of 149169 is about 386.2240282530. The cubic root of 149169 is about 53.0346278988.

The spelling of 149169 in words is "one hundred forty-nine thousand, one hundred sixty-nine".