145839949 has 2 divisors, whose sum is σ = 145839950. Its totient is φ = 145839948.

The previous prime is 145839937. The next prime is 145839979. The reversal of 145839949 is 949938541.

145839949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96236100 + 49603849 = 9810^2 + 7043^2 .

It is a cyclic number.

It is not a de Polignac number, because 145839949 - 2⁹ = 145839437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145839896 and 145839905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145839979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72919974 + 72919975.

It is an arithmetic number, because the mean of its divisors is an integer number (72919975).

Almost surely, 2^145839949 is an apocalyptic number.

It is an amenable number.

145839949 is a deficient number, since it is larger than the sum of its proper divisors (1).

145839949 is an equidigital number, since it uses as much as digits as its factorization.

145839949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 52.

The square root of 145839949 is about 12076.4212000079. The cubic root of 145839949 is about 526.3712590995.

The spelling of 145839949 in words is "one hundred forty-five million, eight hundred thirty-nine thousand, nine hundred forty-nine".