140054489 has 2 divisors, whose sum is σ = 140054490. Its totient is φ = 140054488.

The previous prime is 140054479. The next prime is 140054507. The reversal of 140054489 is 984450041.

It is a happy number.

140054489 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., 114854089 + 25200400 = 10717^2 + 5020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140054489 is a prime.

It is a super-2 number, since 2×140054489² = 39230519778102242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_7915139 and since 140054489 and 7915139 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (140054479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70027244 + 70027245.

It is an arithmetic number, because the mean of its divisors is an integer number (70027245).

Almost surely, 2^140054489 is an apocalyptic number.

It is an amenable number.

140054489 is a deficient number, since it is larger than the sum of its proper divisors (1).

140054489 is an equidigital number, since it uses as much as digits as its factorization.

140054489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 140054489 is about 11834.4619227069. The cubic root of 140054489 is about 519.3167666405.

The spelling of 140054489 in words is "one hundred forty million, fifty-four thousand, four hundred eighty-nine".