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140656489 is a prime number
BaseRepresentation
bin10000110001000…
…11111101101001
3100210200002102121
420120203331221
5242002001424
621542431241
73325363141
oct1030437551
9323602377
10140656489
1172440336
123b132521
13231aa0bc
1414975921
15c535ee4
hex8623f69

140656489 has 2 divisors, whose sum is σ = 140656490. Its totient is φ = 140656488.

The previous prime is 140656471. The next prime is 140656493. The reversal of 140656489 is 984656041.

140656489 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., 121881600 + 18774889 = 11040^2 + 4333^2 .

It is a cyclic number.

It is not a de Polignac number, because 140656489 - 27 = 140656361 is a prime.

It is not a weakly prime, because it can be changed into another prime (140656469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70328244 + 70328245.

It is an arithmetic number, because the mean of its divisors is an integer number (70328245).

Almost surely, 2140656489 is an apocalyptic number.

It is an amenable number.

140656489 is a deficient number, since it is larger than the sum of its proper divisors (1).

140656489 is an equidigital number, since it uses as much as digits as its factorization.

140656489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 140656489 is about 11859.8688441315. The cubic root of 140656489 is about 520.0597675385.

The spelling of 140656489 in words is "one hundred forty million, six hundred fifty-six thousand, four hundred eighty-nine".