145949 has 2 divisors, whose sum is σ = 145950. Its totient is φ = 145948.

The previous prime is 145933. The next prime is 145963. The reversal of 145949 is 949541.

145949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145924 + 25 = 382^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 145949 - 2⁴ = 145933 is a prime.

It is a super-2 number, since 2×145949² = 42602221202, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72974 + 72975.

It is an arithmetic number, because the mean of its divisors is an integer number (72975).

2¹⁴⁵⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

145949 is a deficient number, since it is larger than the sum of its proper divisors (1).

145949 is an equidigital number, since it uses as much as digits as its factorization.

145949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 145949 is about 382.0327211117. The cubic root of 145949 is about 52.6502423460.

The spelling of 145949 in words is "one hundred forty-five thousand, nine hundred forty-nine".