2935981 has 2 divisors, whose sum is σ = 2935982. Its totient is φ = 2935980.

The previous prime is 2935957. The next prime is 2935993. The reversal of 2935981 is 1895392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2924100 + 11881 = 1710^2 + 109^2 .

It is a cyclic number.

It is not a de Polignac number, because 2935981 - 2¹³ = 2927789 is a prime.

It is a super-2 number, since 2×2935981² = 17239968864722, which contains 22 as substring.

It is an Ulam number.

2935981 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2935981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2932981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1467990 + 1467991.

It is an arithmetic number, because the mean of its divisors is an integer number (1467991).

2^2935981 is an apocalyptic number.

It is an amenable number.

2935981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2935981 is an equidigital number, since it uses as much as digits as its factorization.

2935981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 2935981 is about 1713.4704549539. The cubic root of 2935981 is about 143.1916676123.

It can be divided in two parts, 2935 and 981, that added together give a triangular number (3916 = T₈₈).

The spelling of 2935981 in words is "two million, nine hundred thirty-five thousand, nine hundred eighty-one".