144834857 has 2 divisors, whose sum is σ = 144834858. Its totient is φ = 144834856.

The previous prime is 144834839. The next prime is 144834941. The reversal of 144834857 is 758438441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143544361 + 1290496 = 11981^2 + 1136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144834857 is a prime.

It is not a weakly prime, because it can be changed into another prime (144834757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72417428 + 72417429.

It is an arithmetic number, because the mean of its divisors is an integer number (72417429).

Almost surely, 2^144834857 is an apocalyptic number.

It is an amenable number.

144834857 is a deficient number, since it is larger than the sum of its proper divisors (1).

144834857 is an equidigital number, since it uses as much as digits as its factorization.

144834857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 430080, while the sum is 44.

The square root of 144834857 is about 12034.7354353970. The cubic root of 144834857 is about 525.1592647567.

The spelling of 144834857 in words is "one hundred forty-four million, eight hundred thirty-four thousand, eight hundred fifty-seven".