4055990381 has 2 divisors, whose sum is σ = 4055990382. Its totient is φ = 4055990380.

The previous prime is 4055990377. The next prime is 4055990461. The reversal of 4055990381 is 1830995504.

It is a happy number.

4055990381 is digitally balanced in base 3, 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., 3980474281 + 75516100 = 63091^2 + 8690^2 .

It is a cyclic number.

It is not a de Polignac number, because 4055990381 - 2² = 4055990377 is a prime.

It is a super-2 number, since 2×4055990381² = 32902115941529050322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4055990321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027995190 + 2027995191.

It is an arithmetic number, because the mean of its divisors is an integer number (2027995191).

Almost surely, 2^4055990381 is an apocalyptic number.

It is an amenable number.

4055990381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4055990381 is an equidigital number, since it uses as much as digits as its factorization.

4055990381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 4055990381 is about 63686.6577942350. The cubic root of 4055990381 is about 1594.7733591749.

The spelling of 4055990381 in words is "four billion, fifty-five million, nine hundred ninety thousand, three hundred eighty-one".