4401595981 has 2 divisors, whose sum is σ = 4401595982. Its totient is φ = 4401595980.

The previous prime is 4401595949. The next prime is 4401596011. The reversal of 4401595981 is 1895951044.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2930489956 + 1471106025 = 54134^2 + 38355^2 .

It is a cyclic number.

It is not a de Polignac number, because 4401595981 - 2⁵ = 4401595949 is a prime.

It is a super-2 number, since 2×4401595981² = 38748094359910704722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4401595181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2200797990 + 2200797991.

It is an arithmetic number, because the mean of its divisors is an integer number (2200797991).

Almost surely, 2^4401595981 is an apocalyptic number.

It is an amenable number.

4401595981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4401595981 is an equidigital number, since it uses as much as digits as its factorization.

4401595981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 4401595981 is about 66344.5248758328. The cubic root of 4401595981 is about 1638.8406416727.

The spelling of 4401595981 in words is "four billion, four hundred one million, five hundred ninety-five thousand, nine hundred eighty-one".