145849 has 4 divisors (see below), whose sum is σ = 159120. Its totient is φ = 132580.

The previous prime is 145829. The next prime is 145861. The reversal of 145849 is 948541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145849 - 2⁷ = 145721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145849.

It is not an unprimeable number, because it can be changed into a prime (145819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6619 + ... + 6640.

It is an arithmetic number, because the mean of its divisors is an integer number (39780).

2¹⁴⁵⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

145849 is a deficient number, since it is larger than the sum of its proper divisors (13271).

145849 is a wasteful number, since it uses less digits than its factorization.

145849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13270.

The product of its digits is 5760, while the sum is 31.

The square root of 145849 is about 381.9018198438. The cubic root of 145849 is about 52.6382147949.

The spelling of 145849 in words is "one hundred forty-five thousand, eight hundred forty-nine".