2435981 has 6 divisors (see below), whose sum is σ = 2588010. Its totient is φ = 2292416.

The previous prime is 2435977. The next prime is 2436017. The reversal of 2435981 is 1895342.

2435981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 570025 + 1865956 = 755^2 + 1366^2 .

It is not a de Polignac number, because 2435981 - 2² = 2435977 is a prime.

It is a super-2 number, since 2×2435981² = 11868006864722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2435911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3926 + ... + 4503.

It is an arithmetic number, because the mean of its divisors is an integer number (431335).

2^2435981 is an apocalyptic number.

It is an amenable number.

2435981 is a deficient number, since it is larger than the sum of its proper divisors (152029).

2435981 is an equidigital number, since it uses as much as digits as its factorization.

2435981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8463 (or 8446 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 2435981 is about 1560.7629544553. The cubic root of 2435981 is about 134.5523535957.

The spelling of 2435981 in words is "two million, four hundred thirty-five thousand, nine hundred eighty-one".