4140390281 has 2 divisors, whose sum is σ = 4140390282. Its totient is φ = 4140390280.

The previous prime is 4140390257. The next prime is 4140390337. The reversal of 4140390281 is 1820930414.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2124380281 + 2016010000 = 46091^2 + 44900^2 .

It is a cyclic number.

It is not a de Polignac number, because 4140390281 - 2⁶ = 4140390217 is a prime.

It is a super-2 number, since 2×4140390281² = 34285663357998517922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4140390211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2070195140 + 2070195141.

It is an arithmetic number, because the mean of its divisors is an integer number (2070195141).

Almost surely, 2^4140390281 is an apocalyptic number.

It is an amenable number.

4140390281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4140390281 is an equidigital number, since it uses as much as digits as its factorization.

4140390281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 4140390281 is about 64345.8645213506. The cubic root of 4140390281 is about 1605.7592291815.

The spelling of 4140390281 in words is "four billion, one hundred forty million, three hundred ninety thousand, two hundred eighty-one".