148709 has 6 divisors (see below), whose sum is σ = 163590. Its totient is φ = 135080.
The previous prime is 148693. The next prime is 148711. The reversal of 148709 is 907841.
It can be written as a sum of positive squares in only one way, i.e., 148225 + 484 = 385^2 + 22^2 .
It is not a de Polignac number, because 148709 - 24 = 148693 is a prime.
It is a super-2 number, since 2×1487092 = 44228733362, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 148709.
It is not an unprimeable number, because it can be changed into a prime (148609) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 494 + ... + 735.
It is an arithmetic number, because the mean of its divisors is an integer number (27265).
2148709 is an apocalyptic number.
It is an amenable number.
148709 is a deficient number, since it is larger than the sum of its proper divisors (14881).
148709 is a wasteful number, since it uses less digits than its factorization.
148709 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1251 (or 1240 counting only the distinct ones).
The product of its (nonzero) digits is 2016, while the sum is 29.
The square root of 148709 is about 385.6280591451. The cubic root of 148709 is about 52.9800565762.
The spelling of 148709 in words is "one hundred forty-eight thousand, seven hundred nine".
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